Valves

Question 1

What kind of valve is this?

Answer 1

Plug Valve

Question 2

What kind of valve is this?

Answer 2

Plug Valve

Question 3

A valve stem design is supposed to be “OS&Y.” What does that stand for?

Answer 3

Outside Stem and Yoke.

This indicates that the valve stem is a threaded part that raises and lowers the valve’s gate when the handle is turned. The stem is visible outside the valve body, while the handle remains stationary.

Question 4

Line 1 represents which common control valve flow characteristic?

Answer 4

Quick opening

Question 5

Line 2 represents which common control valve flow characteristic?

Answer 5

Linear

Question 6

Line 3 represents which common control valve flow characteristic?

Answer 6

Equal percentage

Question 7

Answer 7

Flow coefficient

Question 8

What would be a good valve choice for a slurry or viscous fluid that needs to be diverted to multiple flow paths?

Answer 8

Plug valve

Question 9

A valve’s _____________ reveals its capacity to allow fluid to flow through it, essentially indicating how much fluid can pass through the valve at a given pressure drop; a higher _____________ means a greater flow rate can be achieved with the same pressure drop, signifying a more efficient valve for fluid flow.

Answer 9

Flow coefficient