backflow

Also, mechanical backflow preventers and air gaps can be bypassed.

此外, 机械式防回流阀和气隙可以作为旁路.

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Contact the factory for specific approvals on the reduced pressure backflow preventer.

如果需要特殊的减压防回流阀的认证,请与工厂联系.

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However, backflow may now be creating other side effects.

不过, 眼下回流可能正在引发其它一些负面影响.

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From this causes two backflow agitation efficiency not high substantial clause.

由此引起二次回流搅动效率不高的重要原因.

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Backflow preventer manufactured from 300 Series stainless steel for corrosion resistance.

防回流阀采用耐腐蚀的300系列不锈钢制造.

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Especially made for testing all reduced pressure zone backflow preventers.

专用于检测所有减压区防回流阀.

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For use with backflow preventer test cocks to protect from damage.

用于防回流阀测试旋塞,防止受到破坏.

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They prevent steam backflow from the header to the boiler.

这种阀门能够防止蒸汽从集气箱倒流到锅炉里.

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The backflow preventer must be installed upstream of the regulator.

防倒流装置必须安装在调节阀的上游位置.

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During irrigation period , the backflow from the farmland pollutes the branch.

每当农业灌溉之时, 支流都因倒流而严重污染.

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Installing a backflow preventer in a pit or vault is not recommended.

不建议在坑内或拱顶内安装防回流阀.

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Slowly open upstream shutoff and allow the backflow preventer to fill slowly.

慢慢开启上游关闭阀,让防回流阀慢慢注水.

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Media type check valve for preventing backflow.

止回阀类用于阻止介质倒流.

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Four required per backflow preventer.

每个防回流阀需要四个.

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Efficiency and backflow current are the two most important criteria of multistage depressed collector.

效率与电子回流是多级降压收集极的两个非常重要的指标.

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