How to distinguish between the various chip pneumatic ball valve

structurally distinguish
a type pneumatic ball valve is inside the ball of the one-piece ptfe ring, lock nut of the ball diameter than the pipe size slightly smaller, similar Yu Guangshi pneumatic ball valve.
2 type pneumatic ball valve is composed of two parts, the sealing effect is better than a type pneumatic ball valve, ball diameter and pipe diameter, type pneumatic ball valve is easy to remove.
3 type pneumatic ball valve is composed of three parts, on both sides of the pneumatic valve cover and pneumatic valve body, among three type pneumatic ball valve is different from the two type pneumatic ball valve and a pneumatic type ball valve is easy disassembly and maintenance.
distinguish
3 from the pressure plate pressure is much higher than the chip and the chip pneumatic ball valve. Three main type pneumatic ball valve fixed by four bolts, outside a good fastening effect. The precision can achieve the psi pressure pneumatic valve body material. MPa。 Higher pressure pneumatic forging in the body.
pneumatic ball valve can be divided into the form of the structure:
a, floating ball, pneumatic ball valve, pneumatic ball valve ball is floating, under the effect of medium pressure, the fitness ball produce certain displacement and compression at the outlet seal surface, guarantee the outlet seal. Floating ball ball pneumatic valve has simple structure, good sealing, but all spheres of work under medium load to export seal, therefore should consider to seal material can withstand sphere medium working load. In this structure, it is widely used in low pressure pneumatic ball valve.
2, the fixed ball ball pneumatic valve, pneumatic ball valve ball is fixed, does not produce mobile after compression. Fixed ball pneumatic ball valve with floating pneumatic valve seat, after the medium pressure, mobile pneumatic valve seat, make the seal compression on the ball, to ensure the seal. Usually mounted on the upper and lower shaft with ball bearing, the operating torque is small, suitable for high pressure and large diameter of pneumatic valve. To reduce the number of pneumatic ball valve operating torque and increase the reliability of the seal, oil seal pneumatic ball valve, sealing surface between betting special lubricating oil, to form a layer of oil film, which increases the sealing, and reduce operating torque, suitable for pneumatic ball valve with high pressure, large diameter.
3, elastic ball pneumatic ball valve, pneumatic ball valve of the sphere is elastic. Sphere and pneumatic seat sealing adopts metal materials, sealing pressure is very big, relying on the pressure of the medium itself already could not reach the requirements of sealing, must exert external forces. This kind of pneumatic valves are suitable for high temperature and high pressure medium. Elastic ball is on the lower end of the sphere wall open one elastic slot, and elasticity. When close the channel, using pneumatic stem wedge-shaped head make the ball rolling out with pneumatic pressure to seating. Wedge head before you turn the sphere are released, the sphere then restore the original prototype, appear very small gap between the sphere and the pneumatic valve seat, can reduce the sealing surface friction and operating torque.
pneumatic ball valve position according to the channel can be divided into straight-through, three general formula and right Angle type. Two ball after pneumatic valve used for distribution of medium and change the flow of medium.