A、control the fluid flow through it
B、prevent the pressure before it over the specified valve
C、make the pressure after it steady
D、control the direction of oil flow
更多“Overflow valve is used to （）”相关的问题
A、A.close the static leg filling valve B、B.close the overflow tank falling valve C、C.reduce the fuel oil pumping rate D、D.stop the fuel oil pumping operation
A、the inlet valve is open B、the exhaust valve is open C、both valves are close D、both valves are open
A、the inlet valve is open B、the exhaust valve is open C、both valves are closed D、both valves are open
A、the direct acting relief valve is used for controlling lower flows and pressure B、the pilot operated relief valve is used for controlling higher flows and pressure C、the pilot operated relief valve is used for controlling lower flows and pressure D、the controlling accuracy of direct acting relief valve is worse than that of the pilot operated relief valve
客服
TOP
查看正确答案
