... double-check snow plough 双侧板式雪犁 double-check valve 双止回阀 double-coated electrode 双层药皮焊条 ...
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double check valve 双止回阀 ; 双单向阀 ; 双向止回阀 ; 双向阀
double check-valve assembly 双逆止阀装置
double check valve plug 二级单向阀螺塞
double check valve arrangement 二级单向阀布置
Double throttle check valve 双单向节流阀 ; 双单向节省阀
Double Check Valve Backflow-Prevention Assembly 双止回阀防回流组件
double-check valve double non-return valve 双止回阀
double pilot check valve 二级先导式单向阀
double pilot elevation check valve 二级先导式提升单向阀
Designed to test pressure vacuum breakers, reduced pressure backflow preventers or double check valve assemblies, allowing you to eliminate both pressure and differential test gauges.
适用于检测压力真空断路阀，减压防回流阀或双止回阀总成，不再需要压力表和压差表。
Series 719 Double Check Valve Assembly shall be installed at each noted location.
系列719双止回阀总成应该安装在每个标注的位置上。
The TK-DL can test pressure vacuum breakers, reduced pressure backflow preventers or double check valve assemblies.
TK - DL可以检测压力真空断路阀，减压防回流阀或双止回阀总成。
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