The direct-acting relief valve is not suitable for high pressure and large flow relief valve because: ( )
A. The pressure is not set high
B. Too much pressure loss
C. Too small valve opening is easy to block
D. too large pressure regulation deviation
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The relationship between a. pressure loss and b. unloading pressure of pilot relief valve should be ()
A. a>b
B. a=b
C. a D. uncertain
If the damping orifice of pilot-operated pressure relief valve is blocked, what would happen?
A. There is no overflow
B. The inlet pressure of the valve is infinite
C. The inlet pressure ov the valve increases with the increase of load
D. The inlet pressure cannot be adjusted
If the remote control port of pilot-operaed pressure relief valve is connected to the tank, what could happen? ()
A. There is no overflow
B. The inlet pressure is infinite
C. The inlet pressure increases with the increase of load
D. The inlet pressure cannot be adjusted
If the oil return port of spring chamber of pilot-operated pressure reducing valve is blocked, what would happen? ()
A. The pressure can not be adjusted high
B. The pressure is infinite
C. The pressure regulating handle can't be turned
D. The pressure regulating handle turns easily.
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