What does the numbers in 4/2 valve mean?
A. 4 positions and 2 ways
B. 4 ways and 2 positions
C. none of the above
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Check valve is a type of
A. pressure reducing valve
B. pressure relief valve
C. directional control valve
D. none of the above
How is reverse flow possible in pilot operated check valve?
A. spring force lifts the ball due to which reverse flow is possible
B. fluid pressure lifts the ball due to which reverse flow is possible
C. both a and b
D. none of the above
A pressure relief valve can be
A. direct operated
B. pilot operated
C. solenoid operated
D. all the above
What is the difference between pressure relief valve and pressure reducing valve?
A. pressure reducing valve is connected between pump and tank line while pressure relief valve is connected between DCV and branch circuit
B. pressure relief valve is always normally opened
C. pressure reducing valve is connected between DCV and branch circuit while pressure relief valve is connected between pump and tank
D. none of the above
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