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Product overview
Stainless steel vertical check valve refers to the valve that automatically opens and closes the disc depending on the flow of the medium itself to prevent medium backflow, also known as check valve, one-way valve, counterflow valve, and back pressure valve. Check valve is an automatic valve. Its main function is to prevent medium backflow, reverse pump and drive motor, and release of container medium. Check valves can also be used in pipelines to supply auxiliary systems where pressure may rise above system pressure. Check valves can be divided into swing check valves (rotating according to the center of gravity) and lift check valves (moving along the axis).
Design and Manufacture Standards
Structural Length Standard: GB/T 12221
Connection Flange Standard: GB/T 9113
Pressure and temperature grade: GB/T 12224
Test Inspection Standard: GB/T 13927
Product characteristics
The vertical check valve with stainless steel flange of H42W is normally closed. Because of the pressure action of the medium at the inlet end of the pipeline, the spring resistance is overcome to open the valve. When the medium pressure at the inlet end is lower than that at the outlet end, the spring pushes the spool toward the valve seat and closes the valve, preventing the medium from countercurrent, thus playing a check role.
Vertical check valves with stainless steel flanges can be installed either vertically or horizontally because they use spring to support the spool.
