If the control was adjusted , omit the valve test.
A: If the control was
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.
A: If the control was
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.
举一反三
- 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
- The commonly used pressure control valve in hydraulic transmission system is ( ) A: directional valve B: relief valve C: hydraulic control check valve
- A throttle valve is a simple flow control valve, a throttle valve is virtually equal to( ).
- In order to ensure that the pressure difference between the front and rear of the throttle valve remains unchanged when the load changes, the flow through the throttle valve is basically unchanged. The throttle valve is often connected with ( ) to form a speed control valve, or the throttle valve and ( ) are connected in parallel to form a bypass speed control valve. A: Pressure reducing valve B: constant pressure reducing valve C: overflow valve D: differential pressure relief valve
- The()is fitted in the steam supply line and is usually of the<br/>non-return type. A: main steam stop valve B: auxiliary steam stop valve C: feed check or control valve D: blow down valve