Motorized directional valve is used in stroke control. ( )
举一反三
- The commonly used pressure control valve in hydraulic transmission system is ( ) A: directional valve B: relief valve C: hydraulic control check valve
- In structure, all hydraulic control valves consist of______ , ______ (spool, cone or ball) and ______ used to control the valve core.
- In hydraulic transmission, the hydraulic control valve used to control the pressure, flow and direction of liquid is ( ). A: Power plant B: control unit C: auxiliary device D: Actuator
- Which of the following hydraulic control valves belongs to pressure control valve （ ）. A: Unloading valve B: overflow throttle valve C: Hydraulic control check valve D: Low pressure selector valve
- If the control was adjusted , omit the valve test. A: If the control was<br/>adjusted before you started this procedure, do not do the valve test. B: If the control was adjusted previously, omit the valve test. C: Adjust the control prior to doing the valve test. D: The adjustment of the control has priority over the valve test.