One, Q671F Wafer Product Overview Q671F pneumatic valve pneumatic valve is the introduction of ultra-thin Italian localization technology designed and developed a new generation of ultra-short flange distance ball, the ball has a rectangular shape of the core channel, V-shaped and O-shaped. The series has a compact structure, small size, light weight, easy installation, and can be widely used in petroleum, chemical, metallurgy, power, light industry and other fields, oil, water, gas and pulp or fiber fluid for automatic adjustment or cutting control. Q671F pneumatic valve by ultra-thin dual piston rack and pinion pneumatic actuators and ball made from a combination of short flange, the body part with the "1" like electric ball valve. Pneumatic piston actuator spring style points and no spring two. When the valve is fully open or fault request is closed with a spring-loaded (by spring tension recovery reset), the requirements to secure his position fault, with no spring. It mainly consists of a cylinder, springs, pistons, piston rods, front and rear head, rack, and other component parts of the output shaft. For two off valve, to be equipped with a solenoid valve and limit switch, etc; for proportional control valve, to be equipped with locator. Two, Q671F clip-pneumatic valve product features with the overall body structure. By precision machining and assembly, after the end of the load from the ball core, tighten the pressure ring, so that the two soft sealing valve seat and ball core to maintain good contact and sealing. Meanwhile, the inner pressure ring gasket also achieve a good seal, leak-valve operation is zero. As a result of the overall structure of the body, so that the valve is to achieve a short flange distance, the whole weight greatly reduced, only about 50 percent of similar ordinary ball.