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48 Cards in this Set
- Front
- Back
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frost-free faucets |
Shut off portion of the valve installed in a warm area valve installed so water can drain after use provide with self-draining hose and vacuum breaker |
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Metering faucets used in |
Commercial applications where small volumes of water are required
Spring operated cartridge delivered timed amount of water |
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Electronic faucets |
Use infrared sensor that opens solenoid valve for as long as contact is made battery powered or connected to a 24 volt power supply |
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Washer style faucets |
-AKA stem or compression -rely upon the compression of a faucet or Bibb washer against a fixed or replaceable seating area -requires most maintenance -has separate hot and cold (two handle faucet) |
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Washerless faucets |
-Use cartridge -sealed using spring loaded seats O-rings or ceramic disc |
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Ball style faucets |
Easy to operate extremely durable Inexpensive to repair |
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Cartridge style faucet s |
Single handle cartridge faucet: use O-rings or ceramic discs to stop and start the flow two handle faucet cartridges: use alignment of openings in the cartridge |
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Faucet tailpiece nuts and washers aka |
Crows foot |
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Advantage of plastic nut and washer |
If leak occurs does not deteriorate due to corrosion |
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Water supply connections |
Chromed brass Pex Flex swivel adapter |
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What do aerators do |
Restrict water flow |
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Stem packing made from |
Made from a composite or Teflon material. they tend to dry out, older faucets use |
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Flow Restriction devices |
May be installed in the body of the valve or faucet the supply lines to the faucet or the handle of a pull out faucet |
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Diverters |
Start stop the flow of water through the faucet spell it when the spray attachment or showerhead is activated |
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Flush valves |
metering device that permits a predetermined volume water to be delivered to a fixture during each operation cycle |
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3 Types of flush valves |
Piston - two chambers diaphragm - two chambers metering - replaceable cartridge |
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Pressure flush valves |
-Minimum 100 kPa or 15 psi -Max Pressure 550 KPA 80 psi - except metering valve |
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Flush valves for urinals size |
3/4" |
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Metering valve min water supply piping |
1/2 “ |
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Diaphragm and piston valve min water supply |
3/4" |
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Flush valves for water closet |
-Only Diaphragm and piston type -Diaphragm most common -minimum Supply water pipe: 1" Outlet tube: 1-1/2" -volume to flush: 6 Plus litres |
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Flush valves require |
Vacuum breaker |
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What protects a shower valve to hold in correct position of the valve |
Plaster guard |
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What does Bibb washer close against in washer style |
Brass seat |
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What causes wire draw of a brass seat |
Fine spray of water passing between the Bibb washer and the surface of the brass seat |
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Max temp in shower valve |
120 degrees Fahrenheit |
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Min water supply pressure for piston or diaphragm flush valves used on urinals |
15 psi |
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, minimum water supply pressure for piston or diaphragm flush valve used on water closet |
15 psi |
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What size tube required for a flush valve connection to urinal |
3/4" |
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Types of drinking fountains |
Exposed, semi exposed, fully recessed |
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Jet Tubs- Water line supply size: Drain size: |
Waterline supply: 1/2" Drain size:1-1/2" |
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Bar sinks, laboratory sinks and three compartment sinks |
Waterline supply: 1/2"Drain size: 1-1/2" |
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Bidets and drinking fountains |
Waterline supply:3/8" Drain size: 1-1/4" |
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Urinal flush tanks waterline supply |
Waterline supply: 1/2"
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How are pumps size for Jet Tubs |
Size and number of jets |
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How many jets can be found in a standard water pump jet bathtub |
4 to 12 |
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Device used with pump to produce the rate of flow through the Jets |
Air volume switch |
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Drain for jet tub |
1-1/2" |
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Do Jet Tubs require ground fault breakers |
Yes |
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Another name for bar sink |
Entertainment sink |
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What type of trap do bidets have |
Exposed trap |
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Are bidets floor-mounted or wall-mounted |
Floor mounted |
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What temperature water is cooled for drinking fountain |
10 degrees C |
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Purpose of a bypass on a flush valve |
Restores pressure in Upper nozzles |
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Recommended length of flush for a urinal |
3 to 5 Seconds |
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Which side of the centre line of the urinal should the water line to the flush valve be |
Right hand side |
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What kind of valve do infared censors use? |
Celonoid valve |
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Length of supply line |
5 ft |
