Fixed ball valve, is a new generation of high-performance ball valves, suitable for long-distance pipeline and general industrial pipeline, its strength, safety, resistance to harsh environments, etc. in the design of special considerations, suitable for a variety of corrosive and non-corrosive media. It is compared with the floating ball valve, when working, the fluid pressure in front of the valve on the ball produced by the force all transferred to the bearings, will not make the ball to the seat to move, so the seat will not withstand excessive pressure, so the fixed ball valve torque is small, the seat deformation is small, stable sealing performance, long service life, suitable for high-pressure, large-diameter occasions. Advanced spring pre-seat assembly with self-tightening characteristics to realize upstream sealing. Each valve has two seats to seal in each direction, thus installation is bi-directional with no flow direction restriction. This valve is normally installed horizontally.

1, double blocking and discharge function: fixed ball valve with spring preload floating seat, whether the valve is in fully open or fully closed state, the upstream and downstream side of the valve seat so that the fluid blocking, the valve body cavity stagnant matter through the discharge valve discharge.

2, automatic pressure relief function: the valve body cavity stays in the medium temperature rises and cause abnormal pressure, do not need to pass the safety valve, but only by the valve seat function can be automatically relieved, this is to ensure the safety of the valve in the delivery of liquid media is very important.

3, fire safety structure: valves are equipped with fire safety features, its design, manufacture are in accordance with API 607 and API 6FA specification requirements.

4, sealing emergency grease injection rescue: due to foreign objects in the medium or fire caused by the unexpected failure of the valve seat seal, the grease injection valve provides a quick connection with the grease injection gun, the inlet pump is convenient and quick to inject sealing grease into the seat sealing parts to alleviate the leakage.

5、Reliable stem sealing and low operating torque: In addition to setting the standard sealing collar, O-ring is also set on the packing gland, double sealing ensures the reliability of stem sealing; the additional graphite packing and sealing grease injection minimizes the stem leakage after fire. The stem slide bearing and thrust bearing make the valve easy to operate.

6、Full bore or reduced diameter: full bore or reduced diameter structure can be selected according to need. The flow aperture of full bore valve is the same as the inner diameter of pipeline, which is convenient for pipeline cleaning.

7, the stem can be extended: according to the needs of installation or operation, the valve stem can be extended. Extended stem ball valves, especially for city gas and other occasions that require buried pipelines. Extended stem size according to customer needs to determine.

8, flexible operation: the use of a small coefficient of friction and good self-lubricating valve seat and stem bearings, greatly reducing the operating torque of the valve. Therefore, the valve can be operated flexibly and freely for a long period of time even if no sealing grease is provided.