Compressor Valves

Question 1

T or F

Compressor valves are opened by the reciprocating action of the piston

Answer 1

False

Question 2

T or F

leaking suction valves can result increased discharge valve temperature

Answer 2

True

Question 3

List the four elements necessary, and all compressor valves

Answer 3

Sealing element
Seat
Guard
Assembly elements

Question 4

List the three measurements that must be made to an overhauled channel valve

Answer 4

End clearance
Side clearance
Lift check

Question 5

T or F

The dampened disc valve is the valve best suited for high-speed service

Answer 5

True

Question 6

T or F

The concentric ring valve has the lowest capacity of any of the valves because of the restricted passages

Answer 6

False

Question 7

T or F

it is not necessary to loosen the locking cap nut and set screw on a valve cover prior to disassembly

Answer 7

False

Question 8

T or F

It is a common mistake to clean a valve before inspecting it

Answer 8

True

Question 9

List three methods to leak test a compressor valve

Answer 9

Liquid test
Pressure drop
Flow metre

Question 10

T or F

it is important to remove the valve cover bolts before loosening the centre screw

Answer 10

False

Question 11

Why is it a good idea to borrow the compressor over at least three times prior to start up?

Answer 11

To check for protruding valve assembly elements