Fixed ball valves are generally flange connection, but also can be welded connection, used to cut off or connect the media in the pipeline, respectively, for water, steam, oil, liquefied gas, natural gas, gas, nitric acid, acetic acid, Sexual media, urea and other media, fixed ball valve drive for worm gear drive, manual, pneumatic or electric. Fixed ball valve structure features: Double blocking and emission features: Fixed ball valve with spring preload floating seat, regardless of the valve is fully open or fully closed state, the upstream and downstream side of the valve seat to block the fluid, the valve body cavity retentate Through the discharge valve discharge; Automatic pressure relief function: the valve body cavity to stop the medium temperature rise caused abnormal boost, without going through the safety valve, and the valve seat function can automatically pressure relief, which guarantees the valve in the liquid medium When the safety is very important; Fire safety structure: Fixed ball valve with fire safety function, its design and manufacture are in accordance with API 607 ​​and API 6FA specifications; Sealed emergency grease injection: Due to the media caused by foreign body or fire seat seal Accidental failure, the grease valve provides a quick connection with the grease gun, quick and easy injection of sealant to the seat seal to ease leakage; reliable stem seal and low operating torque: In addition to setting the standard seal ring, Packing gland is also set on the "O" ring, double seal to ensure the reliability of the stem seal; additional graphite filling And that the sealant is injected after the fire stem leakage to a minimum. Stem sliding bearings and thrust bearings to make the valve easy to operate; full diameter or reduced diameter: optional full diameter or reduced diameter structure. Full-bore valve flow orifice diameter and pipe diameter consistent, easy to clean the pipeline; Stem lengthened: According to the needs of installation or operation, the valve stem can be lengthened. Extra-long ball valve, especially for urban gas and other places need to be laid buried pipelines. Lengthened stem size according to customer needs to determine; 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. So even in the absence of sealing grease in the case, but also long-term flexibility in the valve operation; more driving methods, easy to automate the control: flexible driving mode, the operating mode can be selected according to the needs of manual, pneumatic, electric, gas and liquid Linkage, hydraulic and so on.
Pneumatic Wheel, Small Pneumatic Wheels, Semi Pneumatic Wheels
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