General Plumbing - Nomenclature Flashcards
Ball valve
Shut-off valve
Gate valve
Shut-off valve
Butterfly valve
Shut-off valve but can also be used for throttling/regulating flow.
Where is a suction diffuser found and what does it do?
Found on the suction side of end-suction pumps.
They straighten the flow and avoid the need for a straight pipe section into the pump. They also have integral strainers.
Where should an air separator be installed?
At highest temperature and the lowest pressure points in the system. Where this is not possible, the best location is at the point of highest temperature.
What does an expansion tank do?
Absorbs excess water pressure caused by thermal expansion
End connection for valves and Fittings - Common application - SCREWED
All pressures. smaller pipe sizes
End connection for valves and Fittings - Common application - WELDED
Available for steel pipe. Used for all fitting connections but for valves, mainly high temp and high pressure services.
End connection for valves and Fittings - Common application - BRAZED
Used on brass
End connection for valves and Fittings - Common application - SOLDERED
Used on copper
End connection for valves and Fittings - Common application - FLARED
Used on metal and plastic tubing
End connection for valves and Fittings - Common application - FLANGED
Used on larger sized pipe
What does a check valve do?
Prevents flow in reverse direction
What does a balancing valve do?
Reduces flow
What does an isolation valve do?
Shut-off valves
