Press the "Start" button, the pump running, then open the suctionvalve of the pump.
按下水泵“开”按钮，泵即运转；然后打开泵的吸入阀。
2
How it works: the piston moves from left to right, form a negative pressure pump cylinder, then the suction tank fluid through the valve into the pump cylinder.
工作原理：活塞自左向右移动时，泵缸内形成负压，则贮槽内液体经吸入阀进入泵缸内。
3
Project standard STPE-0101 page 43 requires that the suction piping up to suction block valve (including the valve) should be rated as discharge piping.