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Contact SupplierWe are offering in line check valves also known as a one-way valve or check valve, check valve, its role is to prevent the line of medium back. Pump water off the bottom valve check valve also belong to the class. Opening and closing pieces by medium flow and forces to open or close the valve in order to prevent the media back called a check valve. Are automatic valves, mainly for the medium-way flow of the pipeline, allowing only medium to flow in one direction, in order to prevent accidents.
valve structure can be divided into:
first, lift check valve: valve slide along the vertical centerline of the valve body, lift check valves can be installed in horizontal pipelines, in the small-caliber high pressure valve ball valve can be used . Lift check valve body shape and cut-off valve (shut-off valve can be common with), so it's a large fluid drag coefficient.
Two, swing check valve: the valve pin around the outside of the rotating seat check valve, swing check valve applications are more common.
Third, the disc valve: valve rotation around the pin inside the valve seat. Simple disc check valve structure, can only be installed in horizontal pipelines, poor sealing.
Fourth, the pipeline valve: the valve body along the centerline of the slide valve. Pipeline valve is a valve emerging, its small size, light weight, good processing, is one of the check valve development. But the fluid drag coefficient slightly larger than the swing check valves.