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do you know the structure requirement of the Pvc pipe made in china ?

  Generally speaking, no matter what brand of the Pvc pipe made in china is, all of them has a good sealing ability, but when it working, the valve body need to suffer some load which comes from the working medium, but it had transporting all of the load to the exit sealing ring, so to make sure that your Pvc pipe made in china can be efficiency working, you need take account of the materials of the sealing ring, you should make sure that the materials can suffer the big load which comes from the valve body medium.

  When the Pvc pipe made in china had to face to a big pressure, the position of the ball body would be excursion, so this structure requirement is been widely used in some low and middle pressure ball valves. The position of the ball body is fixed, so when it had suffer some pressure, its position would never been change. To make sure that the ball valve can be good fixed, you need to add a floating valve seat, then when it suffered some pressure, the position of the valve seat would be change, it can pushed the sealing ring good pressed on the ball body, then the Pvc pipe made in china would have a good sealing function.

  Generally speaking, there would have some bearings on the upper and lower shaft of the ball body, when you install the bearings, you should using a very small strength and torque, it is suitable for some high pressure valves and some large diameter valves.