Pneumatic ball valve
The ball valve is mainly used to cut off or connect the medium in the pipeline, also used for fluid regulation and control, it has some advantages compared with other valves as follows.
1, small fluid resistance, the ball valve is the smallest fluid resistance of all the valves, even if the reduction of the ball valve, its fluid resistance is also quite small.
2, thrust bearing to reduce the frictional torque of the stem, the stem can be operated smoothly and flexibly for a long time.
3, the valve seat sealing performance, the use of PTFE and other resilient materials made of seals, the structure is easy to seal, and the valve sealing capacity of the ball valve increases with the increase in medium pressure.
4, the stem seal is reliable, because the stem only for the seemingly rotating transport and not lift movement, the stem packing seal is not easy to destroy, and the sealing capacity increases with the increase in pressure of the medium.
5、Since PTFE and other materials have good self-lubrication, the friction loss with the ball body is small, so the service life of the ball valve is long.
6、 Under-mounted stem and stem head convex step to prevent the stem from ejecting, such as fire causing damage to the stem seal, the convex step and the valve body can also form a metal contact between them to ensure the stem seal.
7、 Anti-static function: a spring is set between the ball, stem and valve body, which can export the static electricity generated by the switching process.
Adopt new series GT type pneumatic actuator, with double-acting type and single-acting type (spring reset), rack and pinion transmission, safe and reliable; large diameter valve adopts series AW type pneumatic actuator pulling fork transmission, reasonable structure, large output torque, with double-acting type and single-acting type.
1、Gear type double piston, large output torque, small volume.
2、The cylinder is made of aluminum and gold material, with light weight and beautiful appearance.
3、Manual operation mechanism can be installed at the top and bottom.
4、Rack type connection can adjust the opening angle and rated flow.
5、The actuator can be selected with electric signal feedback indication and various accessories to realize automatic operation.
6、IS05211 standard connection provides convenience for product installation and replacement.
7、The knuckle screw of the two end adjustment can make the standard product in 0 ° and 90 ° have ± 4 ° adjustable range. Ensure the synchronization accuracy with the valve.
Options of accessories
The following accessories can be selected according to different controls and requirements.
Cut-off type accessories: single electrically controlled solenoid valve, double electrically controlled solenoid valve, limit switch return.
Adjustment type accessories: electrical positioner, pneumatic positioner, electrical converter.
Air source processing accessories: air filtration pressure reducing valve, air source processing triplet.
Manual mechanism: HVSD hand-operated mechanism
1、 Design and manufacture: GB12237-89, API608, API 6D, JPI 7S-48, BS5351, DIN3357.
2、 Flange size：JB/T74～90（JB74～90）、GB9112～9131、HGJ44～76、SH3406、ANSI B16.5、JIS B2212～2214、NF E29-211、DIN2543
3, structure length: GB12221-89, ANSI B16.10, JIS B2002, NF E29-305, DIN3202.
4、Inspection main test: JB/T 9092, API 598.
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