The advantage of a rising spindle steam stop valve is that:

The advantage of a rising spindle steam stop valve is that:

a. you can tell from a distance if the valve is open or closed
b. it provides a place to install isolation tags
c. it may be easily lubricated
d. the threaded part is not exposed to corrosion by the high temperature steam

Answer: A, C & D.

Regular inspection of a valve is important and items which require close scrutiny are the:

Regular inspection of a valve is important and items which require close scrutiny are the:

a. disc and seat
b. stem and body
c. seat and stem
d. stuffing box and spindle threads
e. hand wheel and packing

Answer: A

In order to ensure safe and continuous operation of a pressure reducing valve, the valve station should have:

In order to ensure safe and continuous operation of a pressure reducing valve, the valve station should have:

a. a safety valve on the downstream side
b. a by-pass loop, downstream safety valve. and a downstream pressure gauge.
c. the piping to the station made of at least Schedule 80 piping
d. a Y-strainer immediately after the valve
e. a metal rather than composition diaphragm

Answer: B

A check valve is a valve that:

A check valve is a valve that:

a. allows flow in one direction only
b. allows flow in two directions
c. allows flow at regular intervals
d. does not allow any flow at all
e. has a locking spindle

Answer: A

A gate valve:

A gate valve:

a. has less restriction in a line than a globe valve
b. should be operating either fully open or fully closed
c. is used to throttle flow
d. is used for different applications than a globe valve

Answer: A, B & D.

The by-pass around a regulating valve should contain a:

The by-pass around a regulating valve should contain a:

a. rising stem gate valve
b. non-rising stem gate valve
c. swing check valve
d. rising stem globe valve
e. lift type check valve

Answer: D