Classic downstream valve. Esteemed for many years for its safe and reliable performance, due to its robust design and low maintenance.
多年来由于其坚固的设计和低维护，可靠的性能，使广大潜水爱好者用起来更安全。
Discharge valve can be will collect the liquid and solid particle emissions, prevent the liquid flow off the downstream, the pollution downstream compressed air system.
排放阀可以将收集的液体和固体微粒排放掉，防止液体流向下游端，污染下游端的压缩空气系统。
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。
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