Three-piece fixed American standard ball valve for the turbine,ball valve

Structural characteristics

Fixed ball valves are suitable for long-distance pipelines and general industrial pipelines. Special considerations have been made in the design for their strength, safety, and resistance to harsh environments. They are applicable to media with weak corrosiveness and non-corrosiveness. Compared with floating ball valves, when in operation, the force generated by the fluid pressure in front of the valve on the ball is transmitted to the bearing, which will not cause the ball to move towards the valve seat. Therefore, the valve seat deformation is small, the sealing performance is stable, and the service life is long. It is suitable for high-pressure and large-diameter applications.

The spring and valve seat assembly, with self-tightening characteristics, achieves upstream sealing. Each valve has two valve seats and can seal in each direction, so there is no flow restriction during installation and it is bidirectional. This valve has two valve body structures: two-piece and three-piece. The middle flange is connected by bolts. The sealing enhanced polytetrafluoroethylene is embedded in the stainless steel ring. A spring is set at the rear of the steel ring to ensure that the valve seat is in close contact with the ball and guarantee sealing. Both the upper and lower valve stems are equipped with PTFE bearings to reduce friction and make operation effortless. There is no adjusting plate at the bottom of the small shaft to ensure the contact position between the ball and the sealing ring. The full-bore structure makes the valve flow hole equal to the inner diameter of the pipeline, facilitating pipeline cleaning.

Characteristics

The components of the American standard fixed three-section ball valve are all castings, which is different from forged parts

2. Bottom-mounted valve stem, with an inverted sealing structure for the equipment

3. Embedded valve seat, with an O-ring installed behind the valve seat to ensure that the medium does not leak out

4. The sealing surface is made of nylon 1010. Its coefficient of friction is usually 1/3 of that of Babbitt alloy, so it is a naturally slippery material. However, its bending strength, impact strength and relatively high ductility are comparable to those of metals.

enforce standards

Design and manufacture in accordance with :AP16D/ANSB16.34,GB12237-89

According to the structure length: AP16D/ANSIB16.10, GB12221-89

Flange dimensions are in accordance with :ANSIB16.5,JB79-59,GB9113-88

Check the test according to :AP16d/AP1598 ZBJ16006

Fixed ball valves are suitable for long-distance pipelines and general industrial pipelines. Special considerations have been made in the design for their strength, safety, and resistance to harsh environments. They are applicable to media with weak corrosiveness and non-corrosiveness. Compared with floating ball valves, when in operation, the force generated by the fluid pressure in front of the valve on the ball is transmitted to the bearing, which will not cause the ball to move towards the valve seat. Therefore, the valve seat deformation is small, the sealing performance is stable, and the service life is long. It is suitable for high-pressure and large-diameter applications.

Packing of Standard Packing: 

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 470 gallon liquid totes Special package is available on request. E FORUs’  is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition