A double check valve assembly shall be installed at each noted location 雙止回閥總成應(yīng)該安裝在每個指定的位置。
There shall be no brass or bronze parts used within the check valve assembly 在止回閥總成內(nèi)不應(yīng)該采用黃銅或青銅部件。
Series 719 double check valve assembly shall be installed at each noted location 系列719雙止回閥總成應(yīng)該安裝在每個標注的位置上。
The double check valve assembly shall be a watts regulator company series 774x 這種雙止回閥總成應(yīng)該是美國瓦茨調(diào)節(jié)閥公司系列774x 。
Series 774x double check valve assemblies are designed to prevent the reverse flow of polluted water from entering the potable water system 系列747雙止回閥總成用于防止污水回流進入飲用水系統(tǒng)中。
Series 774 double check valve assemblies are designed to prevent the reverse flow of polluted water from entering into the potable water system 系列747雙止回閥總成用于防止污水回流進入飲用水系統(tǒng)中。
Series 775 double check valve assemblies provide protection of the potable water supply for non - health hazard cross - connections 系列775雙止回閥總成防止交叉連接處非健康危害的流體污染飲用水供應(yīng)系統(tǒng)。
Series ss007qt stainless steel double check valve assemblies provide protection of the potable water supply for non - health hazard cross - connections 系列ss007qt不銹鋼雙止回閥總成為非健康危害交叉連接處的飲用水提供保護。
Only those cross - connections identified by local inspection authorities as non - health hazard shall be allowed the use of an approved double check valve assembly 只有那些經(jīng)過當?shù)貙彶橹鞴懿块T認定的交叉連接才允許采用雙止回閥總成。
Double check valve assembly shall be installed at each noted location to prevent the unwanted reversal of polluted water into the potable water supply 雙止回閥總成應(yīng)該安裝在每個值得注意的位置,用于防止污水出現(xiàn)不需要的回流而流進飲用水供應(yīng)系統(tǒng)中。