standing valve

The argillaceous materials, with the loose soil appearance, can block the standing valve of pump, causing pump leakage, reducing pump efficiency. In the serious condition, the standing valves were completely chocked up, which seriously affected the well production.

油井产出的泥质物外观表现为松散泥土状，能够阻塞抽油泵固定凡尔，造成泵漏失、降低泵效，严重时固定凡尔全部被泥质物堵死，无法正常生产。

When the vapor is discharged by the pressure-limiting valve, the high temperature is discharged upward from the top end, and the man standing on the side to adjust firepower is not hurt.

当蒸汽由限压阀排出时，高温汽体由顶端向上排放，不会伤到站在侧面调节火力的人；

Always pressurize a regulator slowly, while standing with the cylinder valve between you and the regulator.

总是站得使钢瓶阀门位于你和调整器之间,对调整器慢慢加压.

Research and application of standing valve assembly on tube pumps for blockage for prevention

普通管式泵防堵塞固定阀的研究与应用