water distribution Flashcards
in a water distribution system, the corporation cock is located ____
at the water main
compression repair clamps should never be used ____
underground
a water and gas safety valve is designed to _____
shut off water and gas in the even of a leak
a globe valve would be best described as a ____
throttling valve
a _____ valve should be used when water is run to a sill cock or other appliance that may be subject to freezing
stop and waste
using a sensitive microphone to find a leak is called ____
acoustic leak detection
flared joints are expecially adapted for use when the piping is ____
subjected to periodic disassembly
brazed joints are commonly used with _____
underground piping
water piping should be labeled at ____ ‘ intervals
20’
fire retardant gels are used for ____
providing heat barriers
the main advantage of a butterfly valve is ____
its thin body
a _____ is used to protect against damage due to the sudden opening and closing of a valve or fixture
water hammer arrester
a pressure reducing valve _____
converts high or fluctuating pressure to low consistent pressure
how water is circulated because it _____
provides instant hot water at the point of use
a ____ is used to control operating water pressure in a well system
pressure tank
an atmospheric vacuum breaker is designed for _____
low hazard back siphoning
the #1 test port on a RPBA is located ____
before the #1 shut off valve
graywater system piping must be marked or labeled using ____ coloring
purple
a ____ valve is used to blend hot and cold water to create constant tempered water
thermostatic mixing valve
when there is a cross connection with a high degree of hazard and back pressure, a _______ is used to protect the water system
RPBA
water supply pumps should be inspected at least ____
once a year
when lubricating a supply pump, a ____ type lubricant should be used
grease
the best way to protect the potable water supply at the point of use is by using an _____
air gap
