The socket welded high pressure forged steel ball valve adopts the structure of fixed ball and floating seat. The valve seat is pushed into close contact with the ball by spring force or medium force to produce low pressure sealing or high pressure sealing effect. It has zero leakage, high strength, light weight, It has the characteristics of compact structure, low operating torque and long service life. By changing the structure of the valve seat, functions such as double cut-off relief and double isolation relief can be realized. Fully welded ball valves are widely used in oil and natural gas long-distance pipelines, urban buried pipeline networks and large petrochemical installations.

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The socket welded high pressure forged steel ball valve must be tested before it is used after production, because it is installed on various pipeline projects. If there is a problem in performance, it will affect the work of the entire pipeline. Fully welded ball valve sealing performance test: This test uses nitrogen as the medium to carry out the sealing test. The steps are as follows. First, close the ball valve and inject the medium nitrogen from the sleeve tube through the pressure test valve into the fully welded ball valve to raise the pressure to the specified level. 1.1 times the nominal pressure, and then connected to a container filled with water through a hose for detection, the depth is about 1cm, and it takes about 5min.

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The strength test of the socket welded high pressure forged steel ball valve uses water as the medium to carry out the strength test. It is necessary to weld high pressure caps at the two ends of the ball valve so that the ball of the ball valve is in the open position of 45 degrees. Use the pressure test valves on the sleeves on both sides Inject water into the welded ball valve to increase the pressure to 1.5 times the specified nominal pressure of the welded ball valve, and keep the pressure for 15 minutes. If there is no medium leakage, it means that there is no leakage and it is normal.