Fixed ball valve is a new generation of high performance ball valve. It is suitable for long-distance pipelines and general industrial pipelines. Its strength, safety and harsh environment are specially designed for various corrosive and non-corrosive media. . Compared with the floating ball valve, when working, the force generated by the fluid pressure on the ball before the valve is transmitted to the bearing, and the ball is not moved to the valve seat, so the valve seat does not withstand excessive pressure, so the ball valve is fixed. Low torque, small seat deformation, stable sealing performance and long service life, suitable for high pressure and large diameter applications. Advanced spring pre-seat assembly with self-tightening for upstream sealing. Each valve has two seats that seal in each direction, so the installation has no flow restriction and is bidirectional. This valve is generally installed horizontally.
Features
1. Double blocking and discharging function: The fixed ball valve adopts a spring preloading floating valve seat. When the valve is in the fully open or fully closed state, the valve seat on the upstream and downstream sides blocks the fluid, and the retentate in the valve body is discharged through the discharge valve. .
2. Automatic pressure relief function: When the valve body cavity stays in the medium temperature and causes abnormal pressure rise, it does not need to pass the safety valve, but the valve seat function can automatically release pressure, which ensures the safety of the valve when conveying liquid medium. Sex is very important.
3, fire safety structure: the valve has fire safety function, its design, manufacture are in accordance with API 607 ​​and API 6FA specifications.
advantage
1. Sealed emergency grease injection: Due to the accidental failure of the valve seat seal due to foreign matter or fire in the medium, the grease injection valve provides a quick connection with the grease gun, and the inlet pump can inject the sealing grease into the sealing portion of the valve seat conveniently and quickly. Relieve the leak.
2. Reliable stem seal and low operating torque: In addition to the standard sealing ring, the O-ring is also installed on the packing gland. The double seal ensures the reliability of the stem seal; the added graphite packing and sealing grease Injection minimizes valve stem leakage after a fire. The stem sliding bearing and the thrust bearing make the valve easy to operate.
3, full diameter or reduced diameter: can be selected according to the need for full diameter or reduced diameter structure. The full-bore valve flow orifice diameter is consistent with the inner diameter of the pipeline to facilitate pipeline cleaning.
4, the valve stem can be lengthened: according to the needs of installation or operation, the valve stem can be lengthened. The extended rod ball valve is especially suitable for occasions where underground gas pipelines need to be buried. The length of the stem is determined according to customer needs.
5, flexible operation: the use of a small friction coefficient and good self-lubricating valve seat and stem bearings, greatly reducing the operating torque of the valve. Therefore, even in the case where the sealing grease is not provided, the valve can be operated flexibly and freely for a long period of time.
At present, flat Zinc bar is the ideal material for the zinc static and dynamic balance block of vehicle wheel, with good corrosion resistance.
Excellent mechanical properties,elongation is up to 20% or more,the yield of balance pieces stamping is high.
Product specification: Ñ„19mm(width)*2.65mm(thick)
Product packing: 30-150kgs(special packaging specifications can be negotiated)
Flat Zinc Bar,Anode Zinc Bar,Galvanized Zinc Flat Bar,Zinc Coated Steel Flat Bar
Shaoxing Tianlong Tin Materials Co.,Ltd. , https://www.tianlongspray.com