Characteristics and application of Q641F pneumatic ball valve:
Pneumatic ball valve is mainly used to cut off or connect the medium in the pipeline, can also be used for fluid regulation and control, compared with other types of valves, with the following advantages.
1, fluid resistance is small, the ball valve is the smallest of all types of fluid resistance, even the diameter of the ball valve, the fluid resistance is quite small.
2, thrust bearings to reduce stem friction torque, the valve stem can be smooth and stable operation for a long time.
3, the valve seat sealing performance is good, the use of PTFE and other elastic materials made of sealing ring, the structure is easy to seal, and the ball valve sealing capacity increases with the increase of medium pressure.
4, the valve stem seal is reliable, because the stem only for imitation rotation transported without movement, stem packing seal is not easy to damage, and sealing ability increased with the increase of the pressure medium.
5, due to PTFE and other materials with good self lubrication, and the ball friction loss is small, so the service life of the ball.
6, downloading the stem and the stem head convex order to prevent the stem spray, such as stem seal damage caused by fire, convex order and the body can be formed between the metal contact, to ensure that the valve stem seals.
7, anti-static function: in the ball, stem, valve between the spring, the switch can be generated by the electrostatic process.
Execution standard:
1, design and manufacture: GB12237-89, API608, API 6D, JPI 7S-48, BS5351, DIN3357.
2, flange size: JB/T74 ~ 90 (JB74 ~ 90), GB9112 ~ ~, HGJ44 ~ 76, SH3406, ANSI B16.5, JIS B2212 ~ ~ 2214, NF E29-211, DIN2543.
3, the structure length: GB12221-89, ANSI B16.10, JIS B2002, NF E29-305, DIN3202.
4, the main test: JB/T 9092, API 598.
Performance specification:

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