Compared with throttle valve, the remarkable characteristics of speed regulating valve are ().
A. good flow stability
B. simple structure and low cost
C. large adjustment range
D. limit of minimum pressure difference is small
查看答案
The main hydraulic components used in the pressure regulating and reducing circuit are ( ).
A. directional valve and hydraulic control check valve
B. pressure relief valve and pressure reducing valve
C. sequence valve and pressure relay
D. check valve and pressure relay
Which of the following pressure control valves has a direct outlet to the tank ( )
A. Sequence valve
B. pressure reducing valve
C. pressure relief valve
D. pressure relay
In the hydraulic system, the valve used to regulate the flow of liquid into the actuator is ( )
A. relief valve
B. check valve
C. speed regulating valve
D. directinonal control valve
The pressure loss at the pressure reducing valve in the hydraulic system belongs to
A. pressure loss along the way
B. local pressure loss
C. both
D. neither
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