Types of Valves

The parts of a valve that are replaceable are called​ _____.

• wearable

• trim

• extendable

• expendable

Quickly opening a gate valve may cause​ _____.

• A gurgling noise

• Water hammer

• Nothing unusual

• A hissing noise

Use a​ _____ valve if precise flow and frequent operation of the valve are required.

• Swing-check

• Gate

• Check

• globe

Select a​ _____ valve if a​ quick, manual shutoff is required.

• Check

• Ball

• Gate

• Supply Stop

Use a​ _____ valve in lines with very low backpressure.

• Cross-check

• ​Lift-check

• Swing-check

• Ball-check

A flushometer does not require a storage tank to flush a water closet.

• True

• False

A flushometer must be manually operated to flush a urinal.

• True

• False

A flush valve is​ _____.

• Part of a flushometer

• Installed in the bottom of a water closet storage tank

• Installed flush with the wall and behind the water closet

• Installed flush with the wall and behind the water closet

Install a​ _____ in the water line supplying a water closet.

• Pressure regulator

• Relief valve

• Supply stop valve

• Ball cock

Backwater valves are used in water closet storage tanks to hold water back in preparation for flushing.

• True

• False