Which compressor must have intake and discharge valves to control the flow of air entering and leaving?
a) rotary lobe units
b) screw units
c) sliding vane units
d) reciprocating units
e) centrifugal units
Answer: D
Which compressor must have intake and discharge valves to control the flow of air entering and leaving?
a) rotary lobe units
b) screw units
c) sliding vane units
d) reciprocating units
e) centrifugal units
Answer: D