Distinguish Electric Knife Gate Valve
Update time:2021.06.12 Views:214
The first valve structure in the form of the elastic ball valve 1 distinguishes: the ball valve is elastic. The high temperature check valve is a kind of automatic valve, the main function is to prevent the medium from flowing back, prevent the pump and the drive motor from reversing, and to discharge the container medium. According to the usage conditions of the American standard check valve, the disc can be an all-metal structure, or it can be in the form of a rubber pad or a rubber ring inlaid on the disc holder. Lift check valves can be divided into swing check valves (rotating according to the center of gravity) and lift check valves (moving along the axis). And a ball valve seat ring is made of metal materials, the ratio of the sealing pressure is large, and the medium pressure dependence cannot meet the requirements of the forced force. 2. Floating ball: The ball valve floats under medium pressure, which can produce a certain displacement of the ball and press the outlet end to ensure that the sealing surface of the outlet end of the seal is on the sealing surface. The floating ball valve has a simple structure and has a good seal, but the loaded ball passes through all the working medium outlet rings, so the ring material can be considered to bear the workload of the spherical medium. 3. Fixed ball: The ball valve is fixed and does not move when there is no pressure. For a fixed ball valve with a floating seat, when the pressure medium is used, the seat is moved and pressed against the sealing ring of the ball to ensure sealing. second. Distinguishing the three-piece pressure is much higher than the pressure and the two-piece ball valve. Mainly the four bolts of the outer three valves, which play a very good fastening role. The composition of the three-valve 1 of the third structure is composed of three parts. The bonnet and the valve body on both sides of the middle are easily removed and maintained from the three-ball piece and different two-piece ball valve balls. 2. The two-piece ball valve consists of two parts, the same type of ball, the diameter of the ball and the tube size have a good sealing effect, and it is easier to disassemble than the ball valve. The ball diameter of the three-piece ball valve, ball, PTFE ring, and lock nut is smaller than the pipe diameter, which is similar to the internal integration composed of a wide ball.
