Pneumatics Flashcards
What is used to control a constant pressure in a pneumatic system?
A regulator
What type of screw compressor removes some heat during compression stage?
A wet screw
In a multi stage compressor what is the difference between pistons?
Low pressure pistons are larger in diameter
With the reading of 80 PSIA what is the PSI?
65.3 PSI ( Subtract 14.7)
What is atmospheric pressure?
14.7 PSIA
What is used to reduce line pressure in a pneumatic system?
A regulator
If you have water in a receiver what is the cause?
Faulty after cooler on the compressor
On a pneumatic dust conveyor what area would wear 1st?
Outside curves
If a vacuum cylinder has a leaking rod seal the following occurs…
Reduced retraction force
An equilateral triangle in a pneumatic drawing represents what?
Direction of fluid flow
Which type of compressor uses pistons driven by a crankshaft?
Reciprocating
Reciprocating, single-stage, multi-stage, single-acting: Which of these types of compressors is most efficient?
Multi stage
What is normal atmospheric pressure at sea level?
14.7 PSI
Where is the relief valve in a pneumatic system located?
On the receiver
“At a constant temperature, absolute pressure varies inversely to the volume” this refers to what?
Boyle’s law
Air pressure in the receiver frequently increases and decreases during operation. This is caused by?
Faulty on loading valve
How is an inlet filter for compressor chosen?
Inlet requirements
A receiver has changed in inlet pressure what does this affect?
Volumetric efficiency
You have a 46 in³ container holding 23PSI. You transfer the air into a 17 in³ container what is the new pressure?
62.23 (use high over low method)
A manometer measures what?
Pressure close to atmospheric
