Potable Final

Front 1

Flood level rim of a countertop?

Back 1

32in

Front 2

Flood level rim of a kitchen countertop

Back 2

36 in

Front 3

Shower spout height?

Back 3

6' 6" /78"

Front 4

Shower handle valve height?

Back 4

42in High

Front 5

Barrier-free washroom turning radius?

Back 5

1500 mm x 1500 mm

Front 6

Medical water closet Mount height?

Back 6

400 mm - 460 mm

Front 7

What do PRV's use as pressure sensing devices?

Back 7

PRV's use diaphragms as pressure sensing devices.

Front 8

Minimum pressure for flush valve?

Back 8

15 PSI

Front 9

What is the least expensive pump to install?

Back 9

Continuously running pump

Front 10

What do you consider When selecting a pump for a building?

Back 10

Select a pump with the capacity to satisfy the maximum probable demand (Peak demand)

Front 11

Booster pumps come in what range of sizes in horsepower?

Back 11

1/4 HP- 200 hp

Front 12

On a combination upfeed/downfeed system, the lower floors are supplied by?

Back 12

Maine pressure

Front 13

A constantly running pump requires what?

Back 13

Pressure relief valve

Front 14

Name two different sizes of automatic urinal flush tanks.

Back 14

3 gallon and 5 gallon

Front 15

Which main component of an automatic urinal flush tank controls the frequency of the flush?

Back 15

The fill valve.

Front 16

Which valve family does the fill valve belong to?

Back 16

Needle valve

Front 17

An automatic urinal flush tank operates using what instead of a flush valve?

Back 17

Psiphon instead of a flush valve.

Front 18

Are automatic urinal flush tanks that use siphon instead of flush valves efficient?

Back 18

No these tanks are wasteful water users. It is like having a constant slow leak.

Front 19

Where is the fill valve located? And what is it used for?

Back 19

Inside a the water closet tank, it is used it is used for precise flow and controls the frequency of flush by regulating how fast the tank fills.

Front 20

Which style of faucets require the most maintenance?

Back 20

Washer

Front 21

Which type of faucet is generally used for residential lawn services?

Back 21

Frost-free

Front 22

Which type of faucet is least likely to be used in a residential application?

Back 22

Electronic.

Front 23

Which two styles of faucets use seals held in place with the aid of a spring to prevent water leakage through the faucet?

Back 23

Wash this and ball

Front 24

Name the parts of the common washers Style stem.

Back 24

Front 25

What is the advantage of using a plastic nut and washer rather than a steel nut and washer for fastening a two- handle faucet to a fixture?

Back 25

If the faucet should leak around the stem, a plastic nut and washer will not deteriorate.

Front 26

Most commercial faucets are manufactured from?

Back 26

Yellow brass

Front 27

Metering faucets are using what applications?

Back 27

Where small volumes of water are required for hand washing in commercial applications.

Front 28

Electric faucets have what type of sensor?

Back 28

An infrared sensor.

Front 29

Electric faucets are powered how?

Back 29

Either by battery or connected to a 24 volt power supply.

Front 30

4 styles of faucets?

Back 30

Washer, washerless, ball and cartridge.

Front 31

Two divisions of washer style faucets?

Back 31

Stem, compression.

Front 32

Name Four divisions of washerless style faucet?

Back 32

Ball, ceramic disc, cartridge, ball and cartridge.

Front 33

Water supply max length?

Back 33

30 in

Front 34

The bib washer or faucet washer in most faucets is made of what material?

Back 34

Neoprene composite material

Front 35

In regards to Brass faucet seats , A round opening indicates that the seating area is a cast portion of the valve body and is not?

Back 35

Replaceable

Front 36

A Worn or hardened Bibb washer may cause what?

Back 36

A faucet to drip, the water moving between the washer and seat causes wire drawing of the brass seat.

Front 37

What is a flush valve?

Back 37

A metering device that permits a predetermined volume of water to be delivered to a fixture cheering each operating cycle.

Front 38

What are flush valves (flushometers) primarily used for?

Back 38

Supply water to water closets and urinals in public and institutional applications.

Front 39

What are three types of flush valves?

Back 39

Piston, diaphragm and metering

Front 40

For a piston flush valve the bypass orifice controls?

Back 40

Length of flush

Front 41

For a piston flush valve the adjustment screw controls?

Back 41

Volume

Front 42

CL stands for?

Back 42

Critical level

Front 43

Flush valve Supply size for urinals?

Back 43

Three-quarter inch Outlet

Front 44

Metering valves typically require a minimum of what size water supply piping? While diaphragm and piston valves require a minimum of what size water supply piping?

Back 44

Metering valves typically require a minimum of 1/2" water supply piping, while diaphragm and piston valves require a minimum of 3/4" water supply

Front 45

For a diaphragm flush valve if the length of the flushes too long or flush valve fails to close off what could be the problem?

Back 45

Bypass hole of diaphragm assembly is dirty or plugged.

Front 46

If the length of the flush for a piston flush valve is too long, or the flush valve fails to close off, and the cause is that the line pressure has dropped and is not sufficient to force relief valve to seat, what is the remedy?

Back 46

Shut off all control valves until line pressure has been restored, then reopen all the valves.

Front 47

If a urinal does not flush often enough what must you do?

Back 47

Adjust the fill valve and open it more.