Ball Valve （Trunnion Mounted）
Trunnion Mounted ball valve is a new generation of high-performance ball valve, suitable for long-distance pipelines and general industrial pipelines. Its strength, safety, and resistance to harsh environments have been specially considered in design, and it is suitable for various corrosive and non corrosive media. Compared with floating ball valves, during operation, all the force generated by the fluid pressure in front of the valve on the ball is transmitted to the bearing, which does not cause the ball to move towards the valve seat. Therefore, the valve seat will not bear excessive pressure. Therefore, the torque of the fixed ball valve is small, the deformation of the valve seat is small, the sealing performance is stable, and the service life is long. It is suitable for high-pressure and large-diameter situations. Advanced spring pre seat components with self tightening characteristics achieve upstream sealing. Each valve has two seats that can be sealed in each direction, so there is no flow restriction during installation and it is bidirectional. This valve is generally installed horizontally.
Keyword： Ball Valve （Trunnion Mounted）
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Detail
There are two types of valve body structures for fixed ball valves: two block and three block. The middle flange is connected with bolts, and the sealing is made of reinforced polytetrafluoroethylene embedded in a stainless steel ring. A spring is installed at the back of the steel ring to ensure that the valve seat is tightly against the ball and maintain sealing. Both the upper and lower valve stems are equipped with PTFE bearings to reduce friction and save labor during operation. The bottom of the small shaft is equipped with adjustment plates to ensure the connection position between the ball and the sealing ring. Full bore: The valve flow aperture is consistent with the pipeline inner diameter for pipeline cleaning.
1. Dual blockage and discharge function: The fixed ball valve adopts a spring preloaded floating valve seat. Regardless of whether the valve is in a fully open or fully closed state, the upstream and downstream valve seats block the fluid, and the residual substances in the valve body cavity are discharged through the discharge valve.
2. Automatic pressure relief function: When the temperature of the medium in the valve body cavity increases and causes abnormal pressure rise, there is no need to pass through the safety valve. Instead, relying solely on the valve seat function can automatically relieve pressure, which is very important to ensure the safety of the valve when transporting liquid medium.
3. Fire safety structure: All valves have fire safety functions, and their design and manufacturing comply with the requirements of API 607 and API 6FA specifications.
Nominal diameter:1/2"(15mm)-12"(300mm)
Fixed ball valves are suitable for various pipelines ranging from Class150 to Class1500, PN16 to PN100, and JIS 10K to JIS 20K. They are used to cut off or connect the medium in the pipeline. Different materials are selected and can be used to transport water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea, etc. They are widely used in fields such as petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceuticals, water conservancy, electricity, municipal engineering, steel, etc. The driving mode of fixed ball valve is worm gear Worm drive, manual, pneumatic or electric. Fixed ball valves generally use flange connections or butt welding connections.
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