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- Reduced pressure detector assembly backflow preventer
減壓檢測(cè)器組合防回流裝置 - Four required per backflow preventer
每個(gè)防回流閥需要四個(gè)。 - Laboratory faucet backflow preventer
實(shí)驗(yàn)室旋塞防回流裝置 - For use with backflow preventer test cocks to protect from damage
用于防回流閥測(cè)試旋塞,防止受到破壞。 - Installing a backflow preventer in a pit or vault is not recommended
不建議在坑內(nèi)或拱頂內(nèi)安裝防回流閥。 - A check valve may be required ahead of the backflow preventer
此時(shí)在防回流閥前面可能需要安裝一個(gè)止回閥。 - Performance requirements for backflow preventer with intermediate atmospheric vent
有中氣壓通風(fēng)口的防回流裝置的性能要求 - Backflow preventer manufactured from 300 series stainless steel for corrosion resistance
防回流閥采用耐腐蝕的300系列不銹鋼制造。 - The shutoff valve with the test cock is to be mounted on the inlet side of the backflow preventer
帶測(cè)試旋塞的關(guān)閉閥安裝在防回流閥的進(jìn)口一側(cè)。 - The shutoff valve with the test cock is to be mounted on the inlet side of the backflow preventer
帶測(cè)試旋塞的關(guān)閉閥應(yīng)該安裝在防回流閥的進(jìn)口側(cè)。