倒流防止器

倒流防止器是一种采用止回部件组成的可防止给水管道水流倒流的装置。

 

【特点】
利用减压原理来实现低阻力,在经济流速下正常工作时,实际水损只有1.8-2.5米。
结构紧凑,尺寸更短。两级独立止回阀流阻小、启闭迅速,可有效防止背压突然升高对阀门及管道造成的破坏,具有静音功能。
泄水阀的泄水压力可调,受管道波动干扰小,启闭安全可靠。
双膜片的设计能防止膜片损坏造成的倒流污染。
进排双通道的空气隔断的结构,使隔断腔中进气和排水互不影响,不会产生排水不出和排水不畅的问题,能彻底限制压力水倒流或虹吸倒流发生的可能。
内置安全控制管路系统,避免了外露的旁通管容易被盗和碰坏的危险,并且能防止被人利用进行投毒等破坏活动,确保安全使用且外形美观。
可在线测试,在线检修。


Products and services that meet fluid control requirements

Each process, each facility, and each environmental constraint has its own special requirements. Therefore, Dongyan offers a comprehensive range of products covering different performance levels, pressures, different functions and different materials.

Product Application Scope

These devices are suitable for accurately controlling media such as gases, liquids, steam, etc., and maintaining process parameters such as pressure, flow rate, temperature, and liquid level at given values. Especially suitable for work environments where the allowable pressure difference is small and the allowable leakage is also small, and the pressure difference is not significant.

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