Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
29 Cards in this Set
- Front
- Back
|
Metering valve water supply piping size |
1/2" |
|
|
Diaphragm and piston valve minimum supply piping size? |
3/4" |
|
|
Washer style faucet work by |
Compression against a fixed or replaceable seating area |
|
|
Washer style faucet components |
|
|
|
Three types of flush valves |
Piston, diaphragm, metering |
|
|
Flush valves for water closets are only |
Piston and diaphragm |
|
|
Water closet flush valve minimum water supply size |
1" |
|
|
Why are flush valves installed with a vacuum breaker |
To prevent cross connection |
|
|
When you increase flow you decrease |
Pressure |
|
|
When you increase pressure you decrease |
Flow |
|
|
Minimum of operating pressure of piston and diaphragm valve |
15 psi (100 kpa) - maximum of 80 psi (100 kpa) |
|
|
Flush valve flush time should be between _-_ seconds |
3-5 seconds |
|
|
High pressure meter |
Inlet pressure + 13.57 _______________________ 14.7 |
|
|
Diaphragm vent limiting device |
2.5 ft3/hr methane - 1 ft3/hr propane |
|
|
Max diaphragm size low pressure |
6" |
|
|
What does gas vent suppresor do? |
Slows fluctuations of diaphragm |
|
|
Service regulator pressures |
7" wc to max of 2psi |
|
|
System regulator pressures? |
Gas pressure where the gas pressure is higher than the appliances |
|
|
How many propane regulators are needed |
2 |
|
|
Max propane first stage pressure |
10 psi |
|
|
Propane second stage regulator purpose |
Bring psi from first stage to building pressure |
|
|
Another name for propane second stage regulator |
System regulator |
|
|
ID and OD if flush tank discharge piping |
1" ID and 1 1/4" OD |
|
|
Do trap seal primers have an air break? |
No |
|
|
Hot water in a house should be set to what tempurature |
120F or 49C |
|
|
Category 1 appliance |
78-83% efficient Venting is non positive (uses buoyancy) |
|
|
Category 2 appliance |
Greater than 83% efficient Venting non positive (buoyancy) |
|
|
Category 3 appliance |
78-83% efficient Positive venting |
|
|
Category 4 appliance |
83% + efficient Positive venting |
