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Pressure

Pressure reducing 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

Product features

Professional product design and full application of industry-leading 3D printing technology

Nylon fiber reinforced membrane with high sensitivity and high strength.

1 million switch cycle tests.

Destructive test at 5 times working pressure.

Some parts are precision machined by CNC.

High temperature epoxy resin powder coating ensures anti-corrosion performance and service life.

Different product materials and packaging materials meet different market and certification requirements.

High standard product stress testing.

Low weight seal test: 0.05Mpa.

High pressure seal test: 1.1 × PN+0,1MPa.

Shell strength test: 1.5 × PN+0.1MPa.

Relief pressure difference: 0.02MPa.

Easy installation, simple adjustment and free maintenance.

Working principle

Cambridge backflow preventer series products are a hydraulic control combination device developed by our company, which is used to strictly limit that the pressure water in the pipeline can only flow in one direction when urban water supply and other units supply water to general pollution units. Its function is when siphon backflow and back pressure backflow occur in the water supply system, It can effectively prevent the medium with poor water quality at the outlet from flowing back to the inlet with better water quality, avoid the water pollution of domestic drinking water, and ensure the safety of domestic water supply, so as to achieve the purpose of avoiding backflow pollution.