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Low resistance backflow preventer

Nominal pressurePN16-PN25

Test shell strength2.4MPa~3.75MPa

Liquid high pressure seal1.76MPa~2.75MPa

Gas low pressure seal0.6MPa~0.6MPa

Temperature-29~260℃

MediumWater, steam, oil, etc

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Product overview

The low resistance backflow preventer is a hydraulic control combination device developed by our company, which is mainly used for urban water supply and other water supply units to strictly limit that the pressure water in the pipeline can only flow in one direction. Its function is to effectively prevent the medium with poor water quality at the outlet from flowing back to the inlet with better water quality when siphon backflow and back pressure backflow occur in the water supply system, It avoids the water pollution of domestic water and ensures the safety of domestic water, so as to avoid backflow pollution.

Scope of application

It is mainly used for effective isolation between municipal water supply pipe network and user pipe network, or between domestic water and fire water, air conditioning water, greening water and other different water quality systems; The main function is to prevent the medium with poor water quality at the outlet from leaking to the inlet with good water quality after the valve is closed, and to avoid backflow pollution. Internal leakage sensing and sewage drainage devices shall be set. It can also be used for branch pipe source and continuous pressure flow of harmful pollution, but it can not be used for backflow prevention of toxic pollution.