backflow preventer的意思|示意

The shutoff valve with cock is to be mounted on inlet side of the backflow preventer.

咨询州和当地规程,确保防回流阀的安装符合有关要求,如地面上适当的高度.

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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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When backflow preventer is filled, slowly open the downstream shut - off and fill the water supply system.

等防回流阀充满后, 慢慢开启下游关闭阀,注满水供应系统.

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Four required per backflow preventer.

每个防回流阀需要四个.

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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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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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