Second check must be drip tight when pressure is applied to downstream side of valve.

当阀门下游一侧出现压力时，第二止回阀必须是无滴漏。

youdao

Improvements - blanking drip tight device, according to the material properties have diving filling function. (this function can be chosen).

功能改进——下料有防滴漏装置，可根据物料特性具备下潜灌装功能。(此功能可以选用)。

youdao

The valve bonnet may now be removed. There may be slight leakage as the backseat does not provide a drip-tight seal.

现在可以拆卸阀盖。如果后座无法提供无滴漏密封，则会有轻微的泄漏。

youdao