H71-H72 wafer check valve
Wafer check valve is a general one-way fluid. It is light in weight, small in size, and easy to install between flanges. The interior of the valve is composed of two semicircular springs and a plate, which are fixed on the valve body with pins. The deformation of the spring causes the valve plate to close, and the fluid pressure causes the spring to open. It deforms quickly, thus protecting the pipe from water hammer damage.
H71H/W wafer-type butterfly check valve adopts wafer-type connection and has a compact structure. The valve disc of the valve moves up and down along the center position. Since the valve disc has a short closing stroke and is spring-loaded, the closing speed is fast and can Significantly reduces water hammer. The product has the characteristics of small size, light weight, sensitive movement, reliable sealing, and easy installation. It is especially suitable for use in occasions with limited installation space. It can be used in water, steam, oil, nitric acid, acetic acid, and strongly oxidizing media. and other media.
Installation precautions
When placing the pipeline, attention should be paid to making the passage direction of the wafer check valve consistent with the direction of fluid flow, and it should be installed in a vertically placed pipeline.
For horizontally placed pipelines, place the wafer check valve vertically
Avoid adding pipe joints and obstructions within the valve plate operating radius.
When installing a wafer check valve near an elbow, be sure to leave enough space
Do not install a reducer in front of or behind the wafer check valve
When installing a wafer check valve at the outlet of the water pump, leave at least six times the valve diameter to ensure that the valve plate is eventually affected by the fluid.
Implementation standards
Design and manufacturing: JB/T8937
Structure length: JB/T8937
Piping flange: JB/T74
Test and inspection: JB/T9092-1999
