Vocab Flashcards
(369 cards)
1
Q
What does ABS stand for?
A
Acrylonitrile-butadiend-shytene.
2
Q
What is Accepted Engineering Practice?
A
That which conforms to technical or scientific-based principles, tests, or standards that are accepted by the engineering profession.
3
Q
What does ‘Accessible’ mean?
A
Having access to a fixture, connection, appliance, or equipment, which may require the removal of an access panel, door, or similar obstruction.
4
Q
What does ‘Readily Accessible’ mean?
A
Having direct access without the necessity of removing a panel, door, or similar obstruction.
5
Q
What is an Air Break?
A
A physical separation which may be a low inlet into the indirect waste receptor from the fixture, appliance, or device indirectly connected.
6
Q
What is an Air Gap in Drainage?
A
The unobstructed vertical distance through the free atmosphere between the lowest opening from a pipe, plumbing fixture, appliance, or appurtenance conveying waste to the flood-level rim of the receptor.
7
Q
What is an Air Gap in Water Distribution?
A
The unobstructed vertical distance through the free atmosphere between the lowest opening from a pipe or faucet conveying potable water to the flood-level rim of a tank, vat, or fixture.
8
Q
What is an Alternate Water Source?
A
Nonpotable source of water that includes but is not limited to gray water, on-site treated non-potable water, rainwater, and reclaimed (recycled) water.
9
Q
What is an Appliance?
A
A device that utilizes an energy source to produce light, heat, power, refrigeration, air conditioning, or compressed fuel gas. This definition also includes a vented decorative appliance.
10
Q
What is a Low-Heat Appliance?
A
A fuel-burning appliance that produces a continuous flue gas temperature, at the point of entrance to the flue, of not more than 1000°F (538°C).
11
Q
What is the definition of ‘Approved’?
A
Acceptable to the Authority Having Jurisdiction.
12
Q
What is an ‘Approved Testing Agency’?
A
An organization primarily established for purposes of testing to approved standards and approved by the Authority Having Jurisdiction.
13
Q
What is an ‘Area Drain’?
A
A receptor designed to collect surface or storm water from an open area.
14
Q
What is an ‘Aspirator’?
A
A fitting or device supplied with water or other fluid under positive pressure that passes through an integral orifice or constriction, causing a vacuum.
15
Q
Who is the ‘Authority Having Jurisdiction’?
A
The organization, office, or individual responsible for enforcing the requirements of a code or standard, or for approving equipment, materials, installations, or procedures.
16
Q
What is ‘Backflow’?
A
The flow of water or other liquids, mixtures, or substances into the distributing pipes of a potable supply of water from sources other than its intended source.
17
Q
What is a ‘Backflow Connection’?
A
An arrangement whereby backflow can occur.
18
Q
What is a ‘Backflow Preventer’?
A
A backflow prevention device, an assembly, or another method to prevent backflow into the potable water system.
19
Q
What is ‘Backpressure Backflow’?
A
Backflow due to an increased pressure above the supply pressure, which may be due to pumps, boilers, gravity, or other sources of pressure.
20
Q
What is ‘Backsiphonage’?
A
The flowing back of used, contaminated, or polluted water from a plumbing fixture or vessel into a water supply pipe due to a pressure less than atmospheric in such pipe.
21
Q
What is a ‘Backwater Valve’?
A
A device installed in a drainage system to prevent reverse flow.
22
Q
What defines a ‘Bathroom’?
A
A room equipped with a shower, bathtub, or combination bath/shower.
23
Q
What is a Half Bathroom?
A
A room equipped with only a water closet and lavatory.
24
Q
What is a Bathroom Group?
A
Any combination of fixtures, not to exceed one water closet, two lavatories, either one bathtub or one combination bath/shower, and one shower, and may include a bidet and an emergency floor drain.
25
What is a Battery of Fixtures?
A group of two or more similar, adjacent fixtures that discharge into a common horizontal waste or soil branch.
26
What is a Bedpan Steamer?
A fixture that is used to sterilize bedpans by way of steam.
27
What is a Boiler Blowoff?
An outlet on a boiler to permit emptying or discharge of sediment.
28
What is a Bonding Conductor or Jumper?
A reliable conductor to ensure the required electrical conductivity between metal parts required to be electrically connected.
## Footnote
[NFPA 70:100(I)]
29
What is a Bottle Filling Station?
A plumbing fixture connected to the potable water distribution system and sanitary drainage system that is designed and intended for filling personal use drinking water bottles or containers not less than 10 inches (254 mm) in height.
30
What is a Branch in plumbing?
A part of the piping system other than a main, riser, or stack.
31
What is a Building?
A structure built, erected, and framed of component structural parts designed for the housing, shelter, enclosure, or support of persons, animals, or property of any kind.
32
What is a Building Drain?
That part of the lowest piping of a drainage system that receives the discharge from soil, waste, and other drainage pipes inside the walls of the building and conveys it to the building sewer beginning 2 feet (610 mm) outside the building wall.
33
What is a Building Drain (Sanitary)?
A building drain that conveys sewage only.
34
What is a Building Drain (Storm)?
A building drain that conveys storm water or another drainage, but no sewage.
35
What is a Building Sewer?
That part of the horizontal piping of a drainage system that extends from the end of the building drain and that receives the discharge of the building drain and conveys it to a public sewer, private sewer, private sewage disposal system, or another point of disposal.
36
What is a Building Sewer (Combined)?
A building sewer that conveys both sewage and storm water or other drainage.
37
What is a Building Sewer (Sanitary)?
A building sewer that conveys sewage only.
38
What is a Building Sewer (Storm)?
A building sewer that conveys storm water or another drainage, but no sewage.
39
What is a Building Supply?
The pipe that carries potable water from the water meter or another source of water supply to a building or other point of use or distribution on the lot.
40
What is Category 1?
Activities, systems, or equipment whose failure is likely to cause major injury or death to patients, staff, or visitors.
## Footnote
[NFPA 99:3.3.146.1]
41
What is Category 2?
Activities, systems, or equipment whose failure is likely to cause minor injury to patients, staff, or visitors.
## Footnote
[NFPA 99:3.3.146.2]
42
What is Category 3?
Activities, systems, or equipment whose failure is not likely to cause injury to patients, staff, or visitors, but can cause discomfort.
## Footnote
[NFPA 99:3.3.146.3]
43
What is a Category 3 Vacuum System?
A Category 3 vacuum distribution system that can be either a wet system designed to remove liquid, air-gas, or solids from the treated area; or a dry system designed to trap liquids and solids before the service inlet and to accommodate air-gas only through the service inlet.
## Footnote
[NFPA 99:3.3.21]
44
What is Category 4?
Activities, systems, or equipment whose failure would have no impact on patient care.
## Footnote
[NFPA 99:3.3.146.4]
45
Who is a Certified Backflow Assembly Tester?
A person who has shown competence to test and maintain backflow assemblies to the satisfaction of the Authority Having Jurisdiction.
46
What is a Cesspool?
A lined excavation in the ground that receives the discharge of a drainage system or part thereof, designed to retain organic matter and solids while permitting liquids to seep through.
47
What is a Chimney?
One or more passageways, vertical or nearly so, for conveying flue or vent gases to the outdoors.
## Footnote
[NFPA 54:3.3.18]
48
What is a Factory-Built Chimney?
A chimney composed of listed factory-built components assembled in accordance with the manufacturer's installation instructions.
49
What is a Masonry Chimney?
A field-constructed chimney of solid masonry units, bricks, stones, or reinforced portland cement concrete, lined with suitable chimney flue liners.
50
What is a Metal Chimney?
A chimney constructed of metal with a minimum thickness not less than 0.127 inches (3.23 mm) (No. 10 manufacturer's standard gauge) steel sheet.
51
What is a High-Heat Appliance-Type Chimney?
A factory-built, masonry, or metal chimney suitable for removing the products of combustion from fuel-burning high-heat appliances producing combustion gases in excess of 2000°F (1093°C).
52
What is a Low-Heat Appliance-Type Chimney?
A factory-built, masonry, or metal chimney suitable for removing the products of combustion from fuel-burning low-heat appliances producing combustion gases not in excess of 2018.
53
What is a Medium-Heat Appliance-Type Chimney?
A factory-built, masonry, or metal chimney suitable for removing the products of combustion from fuel-burning medium-heat appliances producing combustion gases, not in excess of 2000°F (1093°C), measured at the appliance flue outlet.
54
What is a Residential Appliance-Type Chimney?
A factory-built or masonry chimney suitable for removing products of combustion from residential-type appliances producing combustion gases, not in excess of 1000°F (538°C), measured at the appliance flue outlet. Factory-built Type HT chimneys have high-temperature thermal shock resistance.
55
What is Clear Water Waste?
Cooling water and condensate drainage from refrigeration and air-conditioning equipment; cooled condensate from steam heating systems, and cooled boiler blowdown water.
56
What is a Clinical Sink?
A fixture that has the same flushing and cleansing characteristics of a water closet that is used to receive the wastes from a bedpan. Also known as a bedpan washer.
57
What are Coastal High Hazard Areas?
An area within the flood hazard area that is subject to high-velocity wave action, shown on a Flood Insurance Rate Map or other flood hazard map as Zone V, VO, VE or V1-30.
58
What is a Code in plumbing standards?
A standard that is an extensive compilation of provisions covering broad subject matter or that is suitable for adoption into law independently of other codes and standards.
59
What is a Combination Temperature and Pressure-Relief Valve?
A relief valve that actuates when a set temperature, pressure, or both is reached. Also known as a T&P Valve.
60
What is a Combination Thermostatic/Pressure Balancing Valve?
A mixing valve that senses outlet temperature and incoming hot and cold water pressure and compensates for fluctuations in incoming hot and cold water temperatures, pressures, or both to stabilize outlet temperatures.
61
What is a Combination Waste and Vent System?
A specially designed system of waste piping embodying the horizontal wet venting of one or more sinks or floor drains using a common waste and vent pipe adequately sized to provide free movement of air above the flow line of the drain.
62
What is a Combined Building Sewer?
See Building Sewer (Combined).
63
What is Combustible Material?
A material that, in the form in which it is used and under the conditions anticipated, will ignite and burn; a material that does not meet the definition of noncombustible.
64
What is Common in plumbing systems?
That part of a plumbing system that is so designed and installed as to serve more than one appliance, fixture, building, or system.
65
What is Condensate?
The liquid phase produced by condensation of a gas or vapor.
66
What is a Conductor in plumbing?
A pipe inside the building that conveys storm water from the roof to a storm drain, combined building sewer, or other approved point of disposal.
67
What is a Confined Space?
A room or space having a volume less than 50 cubic feet per 1000 British thermal units per hour (Btu/h) (4.83 m'/kW) of the aggregate input rating of all fuel-burning appliances installed in that space.
68
What are Construction Documents?
Plans, specifications, written, graphic, and pictorial documents prepared or assembled for describing the design, location, and physical characteristics of the elements of a project necessary for obtaining a permit.
69
What is Contamination in water quality?
An impairment of the quality of the potable water that creates an actual hazard to the public health through poisoning or the spread of disease by sewage, industrial fluids, or waste. Also defined as High Hazard.
70
What is a Continuous Vent?
A vertical vent that is a continuation of the drain to which it connects.
71
What is Continuous Waste?
A drain connecting the compartments of a set of fixtures to a trap or connecting other permitted fixtures to a common trap.
72
What is a Copper Alloy?
A homogenous mixture of two or more metals in which copper is the primary component, such as brass and bronze.
73
What does CPVC stand for?
Chlorinated Polyvinyl Chloride.
74
What is a Critical Care Area?
A room or space in which failure of equipment or a system is likely to cause major injury or death to patients or caregivers (Category 1).
75
What is the Critical Level in backflow prevention?
The critical level (C-L or C/L) marking on a backflow prevention device or vacuum breaker is a point conforming to approved standards that determines the minimum elevation above the flood-level rim of the fixture or receptor served at which the device may be installed.
76
What is a Cross-Connection?
A connection or arrangement, physical or otherwise, between a potable water supply system and a plumbing fixture or a tank, receptor, equipment, or device, through which it may be possible for nonpotable, used, unclean, polluted, and contaminated water, or other substances to enter into a part of such potable water system under any condition.
77
What is a Debris Excluder?
A device installed on the rainwater catchment conveyance system to prevent the accumulation of leaves, needles, or other debris in the system.
78
What is the Department Having Jurisdiction?
The Authority Having Jurisdiction, including any other law enforcement agency affected by a provision of this code, whether such agency is specifically named or not.
79
What is Design Flood Elevation?
The elevation of the design flood, including wave height, relative to the datum specified on the community's legally designated flood hazard map. In Zone AO, it is the highest existing grade of the building's perimeter plus the depth number specified on the flood hazard map. If no depth number is specified, it is taken as 2 feet (610 mm).
80
What is Developed Length?
The length along the centerline of a pipe and fittings.
81
What does Diameter refer to?
Unless specifically stated, 'diameter' is the nominal diameter as designated commercially.
82
What are Direct-Vent Appliances?
Appliances that are constructed and installed so that all air for combustion is derived directly from the outdoors and all flue gases are discharged to the outdoors.
## Footnote
[NFPA 54:3.3.5.3]
83
What is Domestic Sewage?
The liquid and water-borne wastes derived from ordinary living processes, free from industrial wastes, and suitable for satisfactory disposal into the public sewer or a private sewage disposal system.
84
What is a Downspout?
The rain leader from the roof to the building storm drain, combined building sewer, or other means of disposal located outside of the building.
85
What is a Drain?
A pipe that carries waste or waterborne wastes in a building drainage system.
86
What is a Drainage System?
Includes all the piping within public or private premises that conveys sewage, storm water, or other liquid wastes to a legal point of disposal, excluding the mains of a public sewer system or a public sewage treatment or disposal plant.
87
What is a Drinking Fountain?
A plumbing fixture connected to the potable water distribution system and sanitary drainage system that provides drinking water in a flowing stream for direct consumption. It should also incorporate a bottle filling station and may include a water filter and cooling system.
88
What is a Dry Vent?
A vent that does not receive the discharge of any sewage or waste.
89
What is a Durham System?
A soil or waste system in which all piping is threaded pipe, tubing, or other rigid construction, using recessed drainage fittings to correspond to the types of piping.
90
What is an Effective Ground-Fault Current Path?
An intentionally constructed, low-impedance electrically conductive path designed to carry current under ground-fault conditions from the point of a ground fault on a wiring system to the electrical supply source, facilitating the operation of overcurrent protective devices or ground-fault detectors on high-impedance grounded systems.
## Footnote
[NFPA 543.3.34]
91
What is an Effective Opening?
The minimum cross-sectional area at the point of water supply discharge, measured in terms of (1) diameter of a circle or (2) where the opening is not circular, the diameter of a circle of equivalent cross-sectional area.
92
What is an Exam Room Sink?
A sink used in the patient exam room of a medical or dental office with the primary purpose of handwashing.
93
What is an Excess Flow Valve (EFV)?
A valve designed to activate when the fuel gas passing through it exceeds a preset flow rate.
## Footnote
[NFPA 54:3.3.99.3]
94
What is Existing Work?
A plumbing system or any part thereof that has been installed prior to the effective date of this code.
95
What is an Expansion Joint?
A fitting or arrangement of pipe and fittings that permits the contraction and expansion of piping.
96
What does F Rating refer to?
The time period that the penetration firestop system limits the spread of fire through the penetration, tested in accordance with ASTM E814 or UL 1479.
97
What is a Fixture Branch?
A water supply pipe between the fixture supply pipe and the water distribution pipe.
98
What is a Fixture Drain?
The drain from the trap of a fixture to the junction of that drain with any other drain pipe.
99
What is a Fixture Fitting?
A device that controls and guides the flow of water.
100
What is Fixture Supply?
A water supply pipe connecting the fixture with the fixture branch.
101
What is a Fixture Unit?
A quantity in terms of which the load-producing effects on the plumbing system of different kinds of plumbing fixtures are expressed on some arbitrarily chosen scale.
102
What are Flammable Vapors or Fumes?
The concentration of flammable constituents in the air that exceeds 25 percent of the lower flammability limit (LFL).
103
What is a Flood Hazard Area?
The greater of the following two areas: (1) The area within a floodplain subject to a 1 percent or greater chance of flooding in any given year. (2) The area designated as a flood hazard area on a community's flood hazard map, or otherwise legally designated.
104
What is Flood Level?
See Flooded.
105
What is a Flood-Level Rim?
The top edge of a receptor from which water overflows.
106
What does Flooded mean?
A fixture is flooded when the liquid therein touches the flood-level rim.
107
What is a Flue Collar?
That portion of an appliance designed for the attachment of a draft hood, vent connector, or venting system.
## Footnote
[NFPA 54:3.3.44]
108
What is a Flush Tank?
A tank located above or integral with water closets, urinals, or similar fixtures for the purpose of flushing.
109
What is a Flush Valve?
A valve located at the bottom of a tank for flushing water closets and similar fixtures.
110
What is a Flushometer Tank?
A tank integrated within an air accumulator vessel that is designed to discharge a predetermined quantity of water to fixtures for flushing purposes.
111
What is a Flushometer Valve?
A valve that discharges a predetermined quantity of water to fixtures for flushing purposes and is actuated by direct water pressure.
112
What is a FOG Disposal System?
A grease interceptor that reduces nonpetroleum fats, oils, and grease (FOG) in the effluent by separation, mass, and volume reduction.
113
What is Fuel Gas?
Natural, manufactured liquefied petroleum, or a mixture of these.
114
What is a Gang or Group Shower?
Two or more showers in a common area.
115
What is Gas Piping?
An installation of pipe, valves, or fittings that are used to convey fuel gas, installed on a premise or in a building.
116
What is excluded from Gas Piping?
A portion of the service piping and an approved piping connection 6 feet (1829 mm) or less in length between an existing gas outlet and a gas appliance in the same room with the outlet.
117
What is a Gas Piping System?
An arrangement of gas piping or regulators after the point of delivery serving a building, structure, or premises, whether individually metered or not.
118
Who is the Governing Body?
The person or persons who have the overall legal responsibility for the operation of a health care facility.
119
What is Grade in plumbing?
The slope or fall of a line of pipe in reference to a horizontal plane, usually expressed as the fall in a fraction of an inch or percentage slope per foot.
120
What is a Gravity Grease Interceptor?
A plumbing appurtenance installed in a sanitary drainage system to intercept nonpetroleum fats, oils, and greases (FOG) from wastewater discharge.
121
What are the requirements for a Gravity Grease Interceptor?
Identified by volume, 30 minute retention time, baffles, not less than two compartments, a total volume of not less than 300 gallons (1135 L), and gravity separation.
122
What is Gray Water?
Untreated wastewater that has not come into contact with toilet waste, kitchen sink waste, or similarly contaminated sources.
123
What is a Gray Water Diverter Valve?
A valve that directs gray water to the sanitary drainage system or a subsurface irrigation system.
124
What is a Grease Interceptor?
A plumbing appurtenance installed in a sanitary drainage system to intercept nonpetroleum fats, oils, and greases (FOG) from wastewater discharge.
125
What is a Grease Removal Device (GRD)?
A hydromechanical grease interceptor that automatically, mechanically removes non-petroleum fats, oils and grease (FOG) from the interceptor.
126
What is a Grounding Electrode?
A conducting object through which a direct connection to earth is established.
127
What are Heat-Fusion Weld Joints?
A joint used in some thermoplastic systems to connect the pipe to fittings or pipe lengths directly to one another.
128
What is a High Hazard?
See Contamination.
129
What is a Horizontal Branch?
A drain pipe extending laterally from soil or waste stack or building drain that receives the discharge from one or more fixture drains.
130
What is a Horizontal Pipe?
A pipe or fitting that is installed in a horizontal position or makes an angle of less than 45 degrees with the horizontal.
131
What is Hot Water?
Water at a temperature exceeding or equal to 120°F (49°C).
132
What is a House Drain?
See Building Drain.
133
What is a House Sewer?
See Building Sewer.
134
What is a Hydromechanical Grease Interceptor?
A plumbing appurtenance installed in a sanitary drainage system to intercept nonpetroleum fats, oils, and grease (FOG) from wastewater discharge.
135
What are the design features of a Hydromechanical Grease Interceptor?
Incorporates air entrainment, hydromechanical separation, interior baffling, or barriers, and may have external flow control.
136
What is a Flush Tank?
A tank located above or integral with water closets, urinals, or similar fixtures for the purpose of flushing.
137
What is a Flush Valve?
A valve located at the bottom of a tank for flushing water closets and similar fixtures.
138
What is a Flushometer Tank?
A tank integrated within an air accumulator vessel that is designed to discharge a predetermined quantity of water to fixtures for flushing purposes.
139
What is a Flushometer Valve?
A valve that discharges a predetermined quantity of water to fixtures for flushing purposes and is actuated by direct water pressure.
140
What is a FOG Disposal System?
A grease interceptor that reduces nonpetroleum fats, oils, and grease (FOG) in the effluent by separation, mass, and volume reduction.
141
What is Fuel Gas?
Natural, manufactured liquefied petroleum, or a mixture of these.
142
What is a Gang or Group Shower?
Two or more showers in a common area.
143
What is Gas Piping?
An installation of pipe, valves, or fittings that are used to convey fuel gas, installed on a premise or in a building.
144
What is excluded from Gas Piping?
A portion of the service piping and an approved piping connection 6 feet (1829 mm) or less in length between an existing gas outlet and a gas appliance in the same room with the outlet.
145
What is a Gas Piping System?
An arrangement of gas piping or regulators after the point of delivery serving a building, structure, or premises, whether individually metered or not.
146
Who is the Governing Body?
The person or persons who have the overall legal responsibility for the operation of a health care facility.
147
What is Grade in plumbing?
The slope or fall of a line of pipe in reference to a horizontal plane, usually expressed as the fall in a fraction of an inch or percentage slope per foot.
148
What is a Gravity Grease Interceptor?
A plumbing appurtenance installed in a sanitary drainage system to intercept nonpetroleum fats, oils, and greases (FOG) from wastewater discharge.
149
What are the requirements for a Gravity Grease Interceptor?
Identified by volume, 30 minute retention time, baffles, not less than two compartments, a total volume of not less than 300 gallons (1135 L), and gravity separation.
150
What is Gray Water?
Untreated wastewater that has not come into contact with toilet waste, kitchen sink waste, or similarly contaminated sources.
151
What is a Gray Water Diverter Valve?
A valve that directs gray water to the sanitary drainage system or a subsurface irrigation system.
152
What is a Grease Interceptor?
A plumbing appurtenance installed in a sanitary drainage system to intercept nonpetroleum fats, oils, and greases (FOG) from wastewater discharge.
153
What is a Grease Removal Device (GRD)?
A hydromechanical grease interceptor that automatically, mechanically removes non-petroleum fats, oils and grease (FOG) from the interceptor.
154
What is a Grounding Electrode?
A conducting object through which a direct connection to earth is established.
155
What are Heat-Fusion Weld Joints?
A joint used in some thermoplastic systems to connect the pipe to fittings or pipe lengths directly to one another.
156
What is a High Hazard?
See Contamination.
157
What is a Horizontal Branch?
A drain pipe extending laterally from soil or waste stack or building drain that receives the discharge from one or more fixture drains.
158
What is a Horizontal Pipe?
A pipe or fitting that is installed in a horizontal position or makes an angle of less than 45 degrees with the horizontal.
159
What is Hot Water?
Water at a temperature exceeding or equal to 120°F (49°C).
160
What is a House Drain?
See Building Drain.
161
What is a House Sewer?
See Building Sewer.
162
What is a Hydromechanical Grease Interceptor?
A plumbing appurtenance installed in a sanitary drainage system to intercept nonpetroleum fats, oils, and grease (FOG) from wastewater discharge.
163
What are the design features of a Hydromechanical Grease Interceptor?
Incorporates air entrainment, hydromechanical separation, interior baffling, or barriers, and may have external flow control.
164
What is an Indirect-Fired Water Heater?
A water heater consisting of a storage tank equipped with an internal or external heat exchanger used to transfer heat from an external source to heat potable water.
165
What is an Indirect Waste Pipe?
A pipe that does not connect directly to the drainage system but conveys liquid wastes by discharging into a plumbing fixture, interceptor, or receptacle that is directly connected to the drainage system.
166
What is an Individual Vent?
A pipe installed to vent a fixture trap, connecting with the vent system above the fixture served or terminating in the open air.
167
What is Industrial Waste?
Liquid or water-borne waste from industrial or commercial processes, except domestic sewage.
168
What does 'Insanitary' mean?
A condition that is contrary to sanitary principles or is injurious to health.
169
What conditions apply to 'Insanitary'?
Conditions include: (1) A trap that does not maintain a proper seal. (2) An opening in a drainage system not provided with an approved liquid sealed trap. (3) A fixture not supplied with sufficient water to maintain cleanliness. (4) A defective fixture, trap, pipe, or fitting. (5) A trap directly connected to a drainage system without protection against siphonage and backpressure. (6) A connection that permits unapproved matter to enter a water distribution system.
170
What is an Interceptor (Clarifier)?
A device designed and installed to separate and retain deleterious, hazardous, or undesirable matter from normal wastes.
171
What is the Invert of a pipe?
The lowest portion of the inside of a horizontal pipe.
172
What is a Joint, Brazed?
A joint formed by joining metal parts with alloys that melt at temperatures exceeding 840°F (449°C), but less than the melting temperature of the parts being joined.
173
What is a Joint, Compression?
A multi-piece joint with sub-slimped threaded nuts that, when tightened, compress sleeves to form a joint around the periphery of the tubing they connect.
174
What is a Joint, Flanged?
A joint made by bolting together a pair of flanged nuts.
175
What is a Joint, Flared?
A joint formed by a male fitting that is compressed by a face nut against a mating face.
176
What is a Joint, Mechanical?
A joint for gas or liquid tight fittings formed by the mating of parts through a positive holding mechanism.
177
What is a Joint, Press-Connect?
A permanent mechanical joint created with a pressing tool and jaw or ring that compresses with the manufacturer's installation instructions.
178
What is a Joint, Soldered?
A joint obtained by the joining of metal parts with metallic mixtures or alloys that melt at a temperature up to and including 840°F (449°C).
179
What is a Joint, Welded?
A gastight joint obtained by the joining of metal parts in the plastic molten state.
180
What does 'Labeled' mean?
Equipment or materials bearing a label of a listing agency (accredited conformity assessment body).
181
What are Lavatories in Sets?
Two or three lavatories that are served by one trap.
182
What is a Leader?
An exterior vertical drainage pipe for conveying storm water from roof or gutter drains.
183
What is Deep Sedation/Analgesia?
A drug-induced depression of consciousness during which patients cannot be easily aroused but respond purposefully following repeated or painful stimulation.
184
What is General Anesthesia?
A drug-induced loss of consciousness during which patients are not arousable, even by painful stimulation.
185
What is Minimal Sedation (Anxiolysis)?
A drug-induced state during which patients respond normally to verbal commands, with cognitive function and coordination potentially impaired.
186
What is an Indirect-Fired Water Heater?
A water heater consisting of a storage tank equipped with an internal or external heat exchanger used to transfer heat from an external source to heat potable water.
187
What is an Indirect Waste Pipe?
A pipe that does not connect directly to the drainage system but conveys liquid wastes by discharging into a plumbing fixture, interceptor, or receptacle that is directly connected to the drainage system.
188
What is an Individual Vent?
A pipe installed to vent a fixture trap, connecting with the vent system above the fixture served or terminating in the open air.
189
What is Industrial Waste?
Liquid or water-borne waste from industrial or commercial processes, except domestic sewage.
190
What does 'Insanitary' mean?
A condition that is contrary to sanitary principles or is injurious to health.
191
What conditions apply to 'Insanitary'?
Conditions include: (1) A trap that does not maintain a proper seal. (2) An opening in a drainage system not provided with an approved liquid sealed trap. (3) A fixture not supplied with sufficient water to maintain cleanliness. (4) A defective fixture, trap, pipe, or fitting. (5) A trap directly connected to a drainage system without protection against siphonage and backpressure. (6) A connection that permits unapproved matter to enter a water distribution system.
192
What is an Interceptor (Clarifier)?
A device designed and installed to separate and retain deleterious, hazardous, or undesirable matter from normal wastes.
193
What is the Invert of a pipe?
The lowest portion of the inside of a horizontal pipe.
194
What is a Joint, Brazed?
A joint formed by joining metal parts with alloys that melt at temperatures exceeding 840°F (449°C), but less than the melting temperature of the parts being joined.
195
What is a Joint, Compression?
A multi-piece joint with sub-slimped threaded nuts that, when tightened, compress sleeves to form a joint around the periphery of the tubing they connect.
196
What is a Joint, Flanged?
A joint made by bolting together a pair of flanged nuts.
197
What is a Joint, Flared?
A joint formed by a male fitting that is compressed by a face nut against a mating face.
198
What is a Joint, Mechanical?
A joint for gas or liquid tight fittings formed by the mating of parts through a positive holding mechanism.
199
What is a Joint, Press-Connect?
A permanent mechanical joint created with a pressing tool and jaw or ring that compresses with the manufacturer's installation instructions.
200
What is a Joint, Soldered?
A joint obtained by the joining of metal parts with metallic mixtures or alloys that melt at a temperature up to and including 840°F (449°C).
201
What is a Joint, Welded?
A gastight joint obtained by the joining of metal parts in the plastic molten state.
202
What does 'Labeled' mean?
Equipment or materials bearing a label of a listing agency (accredited conformity assessment body).
203
What are Lavatories in Sets?
Two or three lavatories that are served by one trap.
204
What is a Leader?
An exterior vertical drainage pipe for conveying storm water from roof or gutter drains.
205
What is Deep Sedation/Analgesia?
A drug-induced depression of consciousness during which patients cannot be easily aroused but respond purposefully following repeated or painful stimulation.
206
What is General Anesthesia?
A drug-induced loss of consciousness during which patients are not arousable, even by painful stimulation.
207
What is Minimal Sedation (Anxiolysis)?
A drug-induced state during which patients respond normally to verbal commands, with cognitive function and coordination potentially impaired.
208
What is Moderate Sedation/Analgesia?
A drug-induced depression of consciousness during which patients respond purposefully to verbal commands, either alone or accompanied by light tactile stimulation. No interventions are required to maintain a patient airway, and spontaneous ventilation is adequate.
## Footnote
[NFPA 99:3.3.61.31]
209
What are LP-Gas Facilities?
Facilities that include tanks, containers, container valves, regulating equipment, meters, appurtenances, or any combination thereof for the storage and supply of liquefied petroleum gas for a building, structure, or premises.
210
What is Liquid Waste?
The discharge from a fixture, appliance, or appurtenance in connection with a plumbing system that does not receive fecal matter.
211
What does 'Listed' mean?
Equipment or materials included in a list published by a listing agency that maintains periodic inspection of current production and whose listing states that the equipment or material complies with approved standards or has been tested and found suitable for use in a specified manner.
212
What is a Listing Agency?
An agency accredited by an independent and authoritative conformity assessment body to operate a material and product listing and labeling system accepted by the Authority Having Jurisdiction.
213
What is a Lot?
A single or individual parcel or area of land legally recorded or validated by acceptable means on which is situated a building or which is the site of any work regulated by this code.
214
What does Low Hazard refer to?
See Pollution.
215
What is a Macerating Toilet System?
A system comprised of a sump with macerating pump and connections for a water closet and other plumbing fixtures, designed to accept, grind, and pump wastes to an approved point of discharge.
216
What is a Main in plumbing?
The principal artery of a system of continuous piping to which branches may be connected.
217
What is a Main Sewer?
See Public Sewer.
218
What is a Main Vent?
The principal artery of the venting system to which vent branches may be connected.
219
What does 'May' signify in regulations?
A permissive term.
220
What is Medical Air?
Medical air is supplied from cylinders, bulk containers, or medical air compressors, or reconstituted from oxygen USP and oil-free, dry nitrogen NF.
## Footnote
[NFPA 99:3.3.96]
221
What is Medical Gas?
A patient medical gas or medical support gas.
## Footnote
[NFPA 99:3.3.99]
222
What is a Manifold?
A device for connecting the outlets of one or more gas cylinders to the central piping system for that specific gas.
## Footnote
[NFPA 99:3.3.93]
223
What is a Medical Gas System?
An assembly of equipment and piping for the distribution of nonflammable medical gases such as oxygen, nitrous oxide, compressed air, carbon dioxide, and helium.
## Footnote
[NFPA 99-3.3.100]
224
What is Medical Support Gas?
Nitrogen or instrument air used for any medical support purpose and falls under the general requirements for medical gases.
## Footnote
[NFPA 99:3.3.101]
225
What is Medical-Surgical Vacuum?
A method used to provide a source of drainage, aspiration, and suction to remove body fluids from patients.
## Footnote
[NFPA 99:3.3.102]
226
What is a Medical-Surgical Vacuum System?
An assembly of central vacuum-producing equipment and a network of piping for patient suction in medical applications.
## Footnote
[NFPA 99:3.3.103]
227
What is a Mobile Home Park Sewer?
That part of the horizontal piping of a drainage system that begins 2 feet downstream from the last mobile home site and conveys it to a disposal point.
228
What is Mulch?
Organic materials, such as wood chips and fines, tree bark chips, and pine needles used in a mulch basin to conceal gray water outlets.
229
What is a Mulch Basin?
A subsurface catchment area for gray water that is filled with mulch and prevents ponding, surfacing, or runoff.
230
What is Nitrogen, NF?
Nitrogen complying as a minimum with nitrogen NF.
## Footnote
[NFPA 99:3.3.109.1]
231
What constitutes a Nuisance?
Includes a public nuisance known at common law, work regulated by this code that is dangerous to human life, and inadequate or unsafe water supply or sewage disposal system.
232
What is an Offset in piping?
A combination of elbows or bends in a line of piping that brings one section of the pipe out of line but into a line parallel with the other section.
233
What is On-Site Treated Nonpotable Water?
Nonpotable water, including gray water that has been collected, treated, and intended to be used on-site and is suitable for direct beneficial use.
234
What is Patient Care Space?
Any space of a health care facility wherein patients are intended to be examined or treated.
## Footnote
[NFPA 99:3.3.127]
235
What defines Category 1 Space?
Space in which failure of equipment or a system is likely to cause major injury or death of patients, staff, or visitors.
## Footnote
[NFPA 99:3.3.127.1]
236
What defines Category 2 Space?
Space in which failure of equipment or a system is likely to cause minor injury to patients, staff, or visitors.
## Footnote
[NFPA 99:3.3.127.2]
237
What defines Category 3 Space?
Space in which the failure of equipment or a system is not likely to cause injury to patients, staff, or visitors but can cause discomfort.
## Footnote
[NFPA 99:3.3.127.3]
238
What defines Category 4 Space?
Space in which failure of equipment or a system is not likely to have a physical impact on patient care.
## Footnote
[NFPA 99:3.3.127.4]
239
What is Patient Medical Gas?
Piped gases such as oxygen, nitrous oxide, helium, carbon dioxide, and medical air that are used in the application of human respiration and the calibration of medical devices used for human respiration.
## Footnote
[NFPA 99:3.3.131]
240
What does PB stand for?
Polybutylene.
241
What does PE stand for?
Polyethylene.
242
What does PE-AL-PE stand for?
Polyethylene-aluminum-polyethylene.
243
What does PE-RT stand for?
Polyethylene of raised temperature.
244
What is a Penetration Firestop System?
A specific assemblage of field-assembled materials, or a factory-made device, which has been tested to a standard test method and, where installed properly on penetrating piping materials, is capable of maintaining the fire-resistance rating of assemblies penetrated.
245
Who is defined as a Person in this context?
A natural person, his heirs, executor, administrators, or assigns and shall also include a firm, corporation, municipal or quasi-municipal corporation, or governmental agency. The singular includes the plural, male includes female.
246
What does PEX stand for?
Cross-linked polyethylene.
247
What does PEX-AL-PEX stand for?
Cross-linked polyethylene-aluminum-cross-linked polyethylene.
248
What is a Pipe?
A cylindrical conduit or conductor conforming to the dimensions commonly known as 'pipe size.'
249
What is Plumbing?
The business, trade, or work having to do with the installation, removal, alteration, or repair of plumbing systems or parts thereof.
250
What is a Plumbing Appliance?
A special class of device or equipment that is intended to perform a special plumbing function. Its operation, control, or both may be dependent upon one or more energized components, such as motors, controls, heating elements, or pressure- or temperature-sensing elements.
251
What is a Plumbing Appurtenance?
A manufactured device, a prefabricated assembly, or an on-the-job assembly of component parts that is an adjunct to the basic piping system and plumbing fixtures.
252
What is a Plumbing Fixture?
An approved type installed receptacle, device or appliance that is supplied with water or that receives liquid or liquid-borne wastes and discharges such wastes into the drainage system.
253
What is a Plumbing Official?
See Authority Having Jurisdiction.
254
What is included in a Plumbing System?
Includes all potable water, alternate water sources, building supply, and distribution pipes; all plumbing fixtures and traps; all drainage and vent pipes; and all building drains and building sewers.
255
What is a Plumbing Vent?
A pipe provided to ventilate a plumbing system, to prevent trap siphonage and backpressure, or to equalize the air pressure within the drainage system.
256
What is a Plumbing Vent System?
A pipe or pipes installed to provide a flow of air to or from a drainage system or to provide a circulation of air within such system to protect trap seals from siphonage and backpressure.
257
What is Pollution in the context of water quality?
An impairment of the quality of the potable water to the degree that does not create a hazard to the public health but which does adversely and unreasonably affect the aesthetic qualities of such potable water for domestic use.
258
What is Potable Water?
Water that is satisfactory for drinking, culinary, and domestic purposes and that meets the requirements of the Health Authority Having Jurisdiction.
259
What does PP stand for?
Polypropylene.
260
What is Pressure?
The normal force exerted by a homogeneous liquid or gas, per unit of area, on the wall of the container.
261
What is Residual Pressure?
The pressure available at the fixture or water outlet after allowance is made for pressure drop due to friction loss, head, meter, and other losses in the system during maximum demand periods.
262
What is Static Pressure?
The pressure existing without any flow.
263
What is a Pressure-Balancing Valve?
A mixing valve that senses incoming hot and cold water pressures and compensates for fluctuations in either to stabilize outlet temperature.
264
What is a Pressure-Lock-Type Connection?
A mechanical connection that depends on an internal retention device to prevent pipe or tubing separation. The connection is made by inserting the pipe or tubing into the fitting to a prescribed depth.
265
What does Private or Private Use refer to?
Applies to plumbing fixtures in residences and apartments, to private bathrooms in hotels and hospitals, and to restrooms in commercial establishments where the fixtures are intended for the use of a family or an individual.
266
What is a Private Sewage Disposal System?
A septic tank with the effluent discharging into a subsurface disposal field, into one or more seepage pits, or into a combination of subsurface disposal field and seepage pit or of such other facilities as may be permitted under the procedures set forth elsewhere in this code.
267
What is a Private Sewer?
A building sewer that receives the discharge from more than one building drain and conveys it to a public sewer, private sewage disposal system, or another point of disposal.
268
What is a Proportioning System for Medical Air USP?
A central supply that produces medical air (USP) reconstituted from oxygen USP and nitrogen NF by means of a mixer or blender.
269
What does Public or Public Use refer to?
Applies to plumbing fixtures that are not defined as private or private use.
270
What is a Public Sewer?
A common sewer directly controlled by public authority.
271
What is a Push Fit Fitting?
A mechanical fitting where the connection is assembled by pushing the tube or pipe into the fitting and is sealed with an o-ring.
272
What does PVC stand for?
Polyvinyl Chloride.
273
What does PVDF stand for?
Polyvinylidene Fluoride.
274
What is a Quick-Disconnect Device?
A hand-operated device that provides a means for connecting and disconnecting a hose to a water supply, and that is equipped with a means to shut off the water supply when the device is disconnected.
275
What is a Quick-Disconnect Device (Fuel Gas)?
A hand-operated device that provides a means for connecting and disconnecting an appliance or an appliance connector to a gas supply, and that is equipped with an automatic means to shut off the gas supply when the device is disconnected.
276
What is Rainwater?
Natural precipitation that has not been contaminated by use.
277
What is a Rainwater Catchment System?
A system that utilizes the principle of collecting, storing, and using rainwater from a rooftop or other manmade, aboveground collection surface. Also known as a rainwater harvesting system.
278
What is a Rainwater Storage Tank?
The central component of the rainwater catchment system. Also known as a cistern or rain barrel.
279
What is a Receptor?
An approved plumbing fixture or device of such material, shape, and capacity as to adequately receive the discharge from indirect waste pipes, so constructed and located as to be readily cleaned.
280
What is Reclaimed Water?
Nonpotable water provided by a water/wastewater utility that, as a result of tertiary treatment of domestic wastewater, meets requirements of the public health Authority Having Jurisdiction for its intended uses.
281
Who is a Registered Design Professional?
An individual who is registered or licensed by the laws of the state to perform such design work in the jurisdiction.
282
What is Regulating Equipment?
Includes valves and controls used in a plumbing system that is required to be accessible or readily accessible.
283
What is a Relief Vent?
A vent, the primary function of which is to provide circulation of air between drainage and vent systems or to act as an auxiliary vent on a specially designed system.
284
What is a Remote Outlet?
Where used for sizing water piping, it is the furthest outlet dimension, measuring from the meter, either the developed length of the cold-water piping or through the water heater to the furthest outlet on the hot-water piping.
285
What is a Riser?
A water supply pipe that extends vertically one full story or more to convey water to branches or fixtures.
286
What is a Roof Drain?
A drain installed to receive water collecting on the surface of a roof and to discharge it into a leader, downspout, or conductor.
287
What is a Roof Washer?
A device or method for removal of sediment and debris from a collection surface by diverting initial rainfall from entry into the cistern(s). Also known as a first flush device.
288
What is Roughing-In?
The installation of all parts of the plumbing system that can be completed prior to the installation of fixtures. This includes drainage, water supply, gas piping, vent piping, and the necessary fixture supports.
289
What is a Sand Interceptor?
See Interceptor (Clarifier).
290
What is Scavenging?
Evacuation of exhaled mixtures of oxygen and nitrous oxide.
291
What is Standard Cubic Feet per Minute (SCFM)?
Volumetric flow rate of gas in units of standard cubic feet per minute.
292
What does SDR stand for?
SDR stands for 'standard dimensional ratio,' which is the specific ratio of the average specified outside diameter to the minimum wall thickness for outside controlled diameter plastic pipe.
293
What is a Seepage Pit?
A seepage pit is a lined excavation in the ground that receives the discharge of a septic tank, designed to permit the effluent to seep through its bottom and sides.
294
What is a Septic Tank?
A septic tank is a watertight receptacle that receives the discharge of a drainage system, designed to retain solids, digest organic matter, and allow liquids to discharge into the soil.
295
What is Service Piping?
Service piping is the piping and equipment between the street gas main and the gas piping system inlet, installed by and under the control of the serving gas supplier.
296
What is Sewage?
Sewage is liquid waste containing animal or vegetable matter in suspension or solution, which may include liquids containing chemicals in solution.
297
What is a Sewage Ejector?
A sewage ejector is a device for lifting sewage by entraining it on a high-velocity jet stream, air, or water.
298
What is a Sewage Pump?
A sewage pump is a permanently installed mechanical device for removing sewage or liquid waste from a sump.
299
What does 'Shall' indicate?
'Shall' indicates a mandatory requirement.
300
What is a Shielded Coupling?
A shielded coupling is an approved elastomeric sealing gasket with an approved outer shield and a tightening mechanism.
301
What does 'Should' indicate?
'Should' indicates a recommendation or that which is advised but not required.
302
What is a Single-Family Dwelling?
A single-family dwelling is a building designed to be used as a home by the owner, which is the only dwelling located on a parcel of ground with usual accessory buildings.
303
What is a Slip Joint?
A slip joint is an adjustable tubing connection consisting of a compression nut, a friction ring, and a compression washer, designed to fit a threaded adapter fitting or a standard taper pipe thread.
304
What is a Soil Pipe?
A soil pipe conveys the discharge of water closets, urinals, clinical sinks, or fixtures having similar functions of collection and removal of domestic sewage.
305
What are Special Wastes?
Special wastes are wastes that require some special method of handling, such as the use of indirect waste piping and receptors, corrosion-resistant piping, or other pretreatment facilities.
306
What is a Stack?
A stack is the vertical main of a system of soil, waste, or vent piping extending through one or more stories.
307
What is a Stack Vent?
A stack vent is the extension of soil or waste stacks above the highest horizontal drain connected to the stack.
308
What is a Standard?
A standard is a document containing only mandatory provisions using the word 'shall' to indicate requirements, suitable for mandatory reference by another standard or code.
309
What is a Station Inlet?
A station inlet is an inlet point in a piped medical/surgical vacuum distribution system at which the user makes connections and disconnections.
310
What is a Station Outlet?
A station outlet is an outlet point in a piped medical gas distribution system at which the user makes connections and disconnections.
311
What is a Sterilizer?
A sterilizer is a piece of equipment that disinfects instruments and equipment by way of heat.
312
What is a Storm Sewer?
A storm sewer is a sewer used for conveying rainwater, surface water, condensate, cooling water, or similar liquid wastes.
313
What is a Subsoil Drain?
A subsoil drain collects subsurface or seepage water and conveys it to a place of disposal.
314
What is a Subsoil Irrigation Field?
A subsoil irrigation field is a gray water irrigation field installed in a trench within the layer of soil below the topsoil, typically used for irrigation of deep rooted plants.
315
What is a Subsurface Irrigation Field?
A subsurface irrigation field is a gray water irrigation field installed below finished grade within the topsoil.
316
What is a Sump?
A sump is an approved tank or pit that receives sewage or liquid waste, located below the normal grade of the gravity system and must be emptied by mechanical means.
317
What are Supports?
Supports are devices for properly supporting and securing pipe, fixtures, and equipment.
318
What is a Surge Tank?
A surge tank is a reservoir to modify the fluctuation in flow rates to allow for uniform distribution of gray water to the points of irrigation.
319
What is T Rating?
T Rating is the time period that the penetration firestop system limits the maximum temperature rise of 325°F (181°C) above its initial temperature through the penetration on the nonfire side.
320
What is a Tailpiece?
A tailpiece is the pipe or tubing that connects the outlet of a plumbing fixture to a trap.
321
What is a Thermostatic Valve?
A thermostatic valve is a mixing valve that senses outlet temperature and compensates for fluctuations in incoming hot or cold water temperatures.
322
What is a Toilet Facility?
A toilet facility is a room or space containing not less than one lavatory and one water closet.
323
What is a Transition Gas Riser?
A transition gas riser is a listed or approved section or sections of pipe and fittings used to convey fuel gas and installed in a gas piping system to provide a translation from below ground to above ground.
324
Trap
A fitting or device designed to provide a liquid seal that prevents the back passage of air without materially affecting the flow of sewage or wastewater through it.
325
Trap Arm
Those portions of a fixture drain between a trap and the vent.
326
Trap Primer
A device and system of piping that maintains a water seal in a remote trap.
327
Trap Seal
The vertical distance between the crown weir and the top dip of the trap.
328
Crown Weir (Trap Weir)
The lowest point in the cross-section of the horizontal waterway at the exit of the trap.
329
Top Dip (of the trap)
The highest point in the internal cross-section of the trap at the lowest part of the bend.
330
Unsanitary
See Insanitary.
331
Urinal, Hybrid
A urinal that conveys waste into the drainage system without the use of water for flushing and automatically performs a drain-cleansing action after a predetermined amount of time.
332
Vacuum
A pressure less than that exerted by the atmosphere.
333
Vacuum Breaker
See Backflow Preventer.
334
Vacuum Relief Valve
A device that prevents excessive vacuum in a pressure vessel.
335
Vacuum System-Level 1
A system consisting of central vacuum-producing equipment with pressure and operating controls, shutoff valves, alarm warning systems, gauges, and a network of piping extending to and terminating with suitable station inlets.
336
Valve, Isolation
A valve that isolates one piece of equipment from another.
337
Valve, Pressure-Relief
A pressure-actuated valve held closed by a spring or other means and designed automatically to relieve pressure in excess of its setting.
338
Valve, Riser
A valve at the base of a vertical riser that isolates that riser.
339
Valve, Service
A valve serving horizontal piping extending from a riser to a station outlet or inlet.
340
Valve, Source
A single valve at the source that controls a number of units that makes up the source.
341
Valve, Zone
A valve that controls the gas or vacuum to a particular area.
342
Vent
See Plumbing Vent; Dry Vent; Wet Vent.
343
Vent Connector, Gas
That portion of a gas venting system that connects a listed gas appliance to a gas vent.
344
Vent Offset
An arrangement of two or more fittings and pipe installed for the purpose of locating a vertical section of the vent pipe in a different but parallel plane.
345
Vent Pipe
See Plumbing Vent.
346
Vent Stack
The vertical vent pipe installed primarily for the purpose of providing circulation of air to and from any part of the drainage system.
347
Vent System
See Plumbing Vent System.
348
Vented Flow Control Device
A device installed upstream from the hydromechanical grease interceptor having an orifice that controls the rate of flow through the interceptor.
349
Venting System
A continuous open passageway from the flue collar or draft hood of an appliance to the outdoors for the purpose of removing flue or vent gases.
350
Vent, Gases
A listed factory-made vent pipe and vent fittings for conveying flue gases to the outdoors.
351
Type B Gas Vent
A factory-made gas vent listed by a nationally recognized testing agency for venting listed or approved appliances equipped to burn only gas.
352
Type BW Gas Vent
A factory-made gas vent listed by a nationally recognized testing agency for venting listed or approved gas-fired vented wall furnaces.
353
Type L Gas Vent
A venting system consisting of listed vent piping and fittings for use with oil-burning appliances listed for use with Type L or with listed gas appliances.
354
Vertical Pipe
A pipe or fitting that is installed in a vertical position or that makes an angle of not more than 45 degrees with the vertical.
355
Wall-Hung Water Closet
A water closet installed in such a way that no part of the water closet touches the floor.
356
Waste
See Liquid Waste and Industrial Waste.
357
Waste Pipe
A pipe that conveys only liquid waste, free of fecal matter.
358
Water-Conditioning or Treating Device
A device that conditions or treats a water supply to change its chemical content or remove suspended solids by filtration.
359
Water Distribution Pipe
A pipe that conveys potable water from the building supply pipe to the plumbing fixtures and other water outlets.
360
Water Hammer Arrester
A device designed to provide protection against hydraulic shock in the building water supply system.
361
What is a Water Heater?
An appliance designed primarily to supply hot water for domestic or commercial purposes and equipped with automatic controls limiting water temperature to a maximum of 210°F (99°C).
362
What is a Water Main?
A water supply pipe for public or community use.
363
What is a Water Supply System?
The building supply pipe, the water distribution pipes, and the necessary connecting pipes, fittings, control valves, backflow prevention devices, and appurtenances carrying or supplying potable water in or adjacent to the building or premises.
364
What is a Water/Wastewater Utility?
A public or private entity which may treat, deliver or do both functions to reclaimed (recycled) water, potable water, or both to wholesale or retail customers.
365
Who is a Welder, Pipe?
A person who specializes in the welding of pipes and holds a valid certificate of competency from a recognized testing laboratory, based on the requirements of the ASME Boiler and Pressure Vessels code, Section IX.
366
What are Wet Procedure Locations?
The area in a patient care space where a procedure is performed that is normally subject to wet conditions while patients are present, including standing fluids on the floor or drenching of the work area, either of which condition is intimate to the patient or staff.
## Footnote
[NFPA 99:3.3.171]
367
What is a Wet Vent?
A vent that also serves as a drain.
368
What is a Whirlpool Bathtub?
A bathtub fixture equipped and fitted with a circulating piping system designed to accept, circulate, and discharge bathtub water upon each use.
369
What is a Yoke Vent?
A pipe connecting upward from soil or waste stack to a vent stack to prevent pressure changes in the stacks.
