Products

Product overview

Double check backflow preventer is a hydraulic control combination device developed by our company, which is used for urban water supply units and general pollution units to strictly limit that the pressure water in the pipeline can only flow in one direction. Its function is to prevent the backflow or backflow of medium in the pipeline under any working condition, so as to avoid backflow pollution. It is suitable for places without drainage conditions.

Product features

1.The structure is more compact, the size is short, the volume is small, the backflow is low, and the noise is low. Under the economic flow rate, the normal working water loss is 1.3-2.5m.

2.The unique flow channel design of the two-stage check valve has small flow resistance and fast opening and closing speed, which can effectively prevent the damage of the valve and pipeline caused by the sudden rise of back pressure, limit the backflow of pressure water or siphon, and has the function of mute, effectively prolonging the service life of the valve.

3.Humanized design, the product can be installed horizontally or vertically, online testing and online maintenance.