fully welded ball valves include floating ball valves and trunnion ball valves. Large diameter fully welded ball valves generally use trunnion welded ball valves,

The trunnion welded ball valve has a fixed stem on the upper and lower sides of the ball to ensure the stability of the valve when the ball is opened and closed.

Technical characteristics of welded ball valve:

1. The valve body structure is integrally welded without external leakage.

2. The valve seat is made up of PTFE sealing ring and spring. It has strong adaptability to pressure and temperature changes and will not cause any leakage within the scope of use.

3. The anti-leakage structure of the valve stem, a PTFE self-sealing gasket and an O-ring on the bottom of the valve stem. There are two O-rings and two PTFE gaskets on the top to ensure no leakage. .

4. The valve body material is the same as the pipe material, and there will be no uneven stress and no deformation due to earthquake and vehicle passing through the ground.

5, the valve body is light and easy to keep warm.

6. Directly buried ball valve can be buried directly in the ground. It is not necessary to build a large valve well. It only needs to set up a small shallow well on the ground, which greatly saves construction costs and engineering time.

7. The length of the valve body and the height of the valve stem can be adjusted according to the construction and design requirements of the pipeline.

8. The processing precision of the sphere is very precise and easy to operate, without any interference.

10. There are two connection methods of welding and flange.

Features:
Fully welded ball valve, no external leakage and other phenomena.
The processing of the sphere is tracked and tested by an advanced computer detector, so the processing accuracy of the sphere is high.
Because the material of the valve body is the same as the material of the pipeline, there will be no uneven stress, no deformation due to earthquakes and vehicles passing through the ground, and the pipeline is resistant to aging.
The sealing ring body is made of 25% Carbon (carbon) RPTFE material, which guarantees no leakage (0%).
Directly-buried welded ball valves can be buried directly in the ground, without the need to build tall and large valve wells, only small shallow wells need to be set up on the ground, greatly saving construction costs and engineering time.
According to the construction and design requirements of the pipeline, the length of the valve body and the height of the valve stem can be adjusted.
The processing accuracy of the sphere is very precise, the operation is light, and there is no bad interference.
Using high-grade raw materials, it can keep the pressure above PN25.
Compared with products of the same specifications in the same industry, the valve body is small and the appearance is beautiful.
In order to ensure the normal operation and use of the valve, the service life is more than 20 years.