Water Supply Chapter 3

Pipe size normally is specified by two indicators: ___ and schedule.

• branch layout

• developed length

• nominal pipe size (nps)

• piping system layout

Threaded galvanized steel pipe 1" and larger should be supported ___'.

• 2

• 5

• 12

• 25

All above-ground PVC piping must be supported horizontally every ___'.

• 4

• 8

• 12

• 20

There are two different types of ___ that are commonly used as piping materials—PP-H (homopolymer) and PP-R (random copolymer).

• bevylene

• ethylene

• polyvinl chloride

• polypropylene

A ___ is a pipe fitting with four branches each at 90° to one another.

• saddle fitting

• cross

• tee

• bushing

___ are required for the control of water flow through the water supply system by turning flow off or on to various parts of the system, or isolating water-supplied equipment, tanks, fixtures, appliances, and appurtenances.

• riser clamps

• shutoff valves

• reducers

• pipe guides

The main advantage of a ___ valve is its thin body, which allows the valve to be installed where other valves cannot fit.

• check

• gate

• stop-and-waste

• butterfly

Check valves are available as swing check and ___ check valves.

• lift

• angle

• plug

• shutoff

A ___ valve is an automatic self-closing safety valve installed in an opening of a water heater tank, or other hot water storage tank, that releases water and steam in a controlled manner.

• pressure relief

• swing check

• combination temperature and pressure (T&P) relief

• vacuum relief

A ___ is a plastic pipe hanger that fully encompasses the circumference of the plastic pipe.

• J-hanger

• wraparound clamp

• riser clamp

• talon