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。
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。
Vacuum breakers fail supposing that leaks permit air to enter the interrupting chamber.
假如空气通过裂痕进入灭弧室，真空断路器就失灵。
Vacuum breakers fail supposing that leaks permit air to enter the interrupting chamber.
假如空气通过裂痕进入灭弧室，真空断路器就失灵。
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