Faucets and Flushometers 060301i

Question 1

The body and working components of most quality residential faucets are predominantly manufactured from what?

Answer 1

Yellow brass

Question 2

What’s another name that describes a 2 handle faucet?

Answer 2

Standard

Question 3

What do standard (2 handle) faucets and single-lever faucets rely upon to maintain a set temperature and pressure at the outlet of the faucet?

Answer 3

Water pressure

Question 4

Frost free hose bibs requiring cross-connection protection must be provided with what?

Answer 4

A self draining hose end vacuum breaker

Question 5

Which faucets usually require the most maintenance?

Answer 5

Washer-style or compression faucets

Question 6

Washer style faucets or compression faucets work on the principle of holding a seal or bibb washer over the opening to the faucet by means of what?

Answer 6

A screwed spindle or stem

Question 7

Bibb washers or faucet washers in most faucets are made of what?

Answer 7

Neoprene composite material

Question 8

What is the most common cause of water dripping from the spout of a compression style faucet?

Answer 8

Worn or hardened bibb washer

Question 9

When a faucet drips for a long time due to a worn or hardened bibb washer what other problem can occur?

Answer 9

Water moving between the washer and the seat causes wire drawing of the brass seat

Question 10

What is the only option when repairing a ceramic disk?

Answer 10

Must replace the whole thing

Question 11

Shower valves must be set to not exceed what temperature?

Answer 11

120°F (49°C)

Question 12

What are the 3 traditional types of flush valves?

Answer 12

Piston, diaphragm and metering

Question 13

What fixture requires the use of only a metering style of flush valve?

Answer 13

Urinal

Question 14

Most urinal flush valves require a minimum operating pressure of ___ psi and operate at a maximum of ___ psi

Answer 14

15, 80

Question 15

What size flush valve outlet is required for a urinal?

Answer 15

3/4”

Question 16

Metering valves typically require a minimum of ___ “ water supply piping while diaphragm and piston valves require a minimum ___” water supply

Answer 16

1/2, 3/4

Question 17

What is the minimum supply for a water closet flush valve?

Answer 17

1”

Question 18

What is the minimum outlet for a water closet flush valve?

Answer 18

11/2”

Question 19

What is the primary defence against cross connection in a flush valve?

Answer 19

Vacuum breaker

Question 20

A piston style flush valve that fails to close off after flushing would be an indication of what?

Answer 20

The pistons main seat has become damaged

Question 21

A faucet leaking from the handle is most likely caused by what?

Answer 21

Worn O-ring

Question 22

A piston flush valve on the most downstream water closet in a bank of toilets that doesn’t receive sufficient volume to flush solids would be an indication of what?

Answer 22

Urinal piston parts are installed accidentally

Water line is undersized

Question 23

In a diaphragm flushometer, what creates the seal between the upper and lower chambers as the flush cycle ends?

Answer 23

More force being exerted in the upper chamber due to a large area of diaphragm exposed to pressure holds the diaphragm in a closed position until pressure is relieved by the trip lever initiating the flush cycle

Question 24

What happens when you open the set screw on the top of a piston style flush valve?

Answer 24

Longer flush

Question 25

The o-rings on the top of a washerless cartridge prevent water from following where?

Answer 25

From the handle

Question 26

A diaphragm flush valve that fails to have a long enough flush will most likely be caused by what?

Answer 26

Bypass orifice is damaged and enlarged

Question 27

The length of flush for a urinal should be how long?

Answer 27

3-5 seconds

Question 28

What will happen to the length of flush of a piston flush valve should the adjustment screw be turned counter clockwise?

Answer 28

The length of flush will increase

Question 29

In an electronic flush valve if the length of flush is too short what action should be taken?

Answer 29

Replace the sensor module

Question 30

A diaphragm flush valve that creates a chattering sounds during flush would be an indication of what?

Answer 30

Diaphragm material damaged allowing high velocity water into the upper chamber

Question 31

A diaphragm flush valve that has an excessively long flush would be an indication of what?

Answer 31

Bypass is restricted not allowing the diaphragm to reset in proper time

Question 32

Which flushometer cannot be installed on a water closet?

Answer 32

Metering

Question 33

A continuously running pump should not be used on a high rise apartment complex for what reason?

Answer 33

It will overpressure the system during low demand periods

Question 34

What part of a flush valve prevents cross connection?

Answer 34

Atmospheric vacuum breaker

Question 35

What happens when you turn in the regulating screw on a diaphragm flush valve?

Answer 35

The flush will grow longer