compressor valves

Question 1

Compressor valves are opened by the reciprocating action of the piston?

Answer 1

False

Pressure differential actuates the valves.

Question 2

True or False: Leaking suction valves can result in increased discharge valve temperature.

Answer 2

True

Question 3

List the four (4) principle elements necessary in all compressor valves.

Answer 3

• Seat
• gaurd
• Sealing Element
• Assembly Element

Question 4

List the three (3) measurements that must be made on an overhauled channel valve.

Answer 4

• End Clearance
• Side Clearance
• Lift

Question 5

True or False: The dampened disc valve is the valve best suited to high-speed service.

Answer 5

True

Question 6

True or False: The concentric ring valve has the lowest capacity of any of the valves because of the restricted passages.

Answer 6

False it’s one of the most efficient

Question 7

True or False: 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

True or False: It is a common mistake to clean a valve before inspecting it.

Answer 8

True

Question 9

List three (3) methods to leak test a compressor valve.

Answer 9

• liquid leaks test
• pressure drop test
• flow meter test

Question 10

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

Answer 10

True

Question 11

What is a good idea to do before startup of a compressor?

Answer 11

Bar the compressor over at least three times

Question 12

True or False: You should loosen the centre screw first before removing the valve cover bolts.

Answer 12

False loosen centre screw first

Question 13

What should you check for when barring the compressor over prior to startup?

Answer 13

Protruding elements