Specification :

1.he design of impact hand wheel decreases the operating torque, and ensures the sealing of valve.
2.The design of thrust bearing is used to decrease the open-close torque, and decrease the wear caused by stem nut and yoke.
3.The design of stop block avoids the lose-efficacy of bellows caused by relative rotation between stem and bellows
4.As the secondary sealing device, flexible graphite sealing avoids medium leakage temporarily when bellows is damaged.
5.Separated bonnet and yoke ensures the machining process of parts, sealing performance can be ensured by welding.
6.The design of thread effective bear inner stress, Weld sealing function of protection.
7.The design of thread ensures the casting process performance of yoke, and effectively carries the stress of bellows jointing and protects the sealing property of welding seam.
8. The necessary of bellows number of plies effective guarantee service life of the valve
9.The design of stop block ensures stem stroke strictly, protects bellows from out-of-stroke deformation, and ensures the service life of bellows
10.The design strengthen the tendons Settings can guarantee the bonnet foundry technique and flat type bonnet the pressure-bearing performance.
11.The design of guide gasket avoids the wall-hitting issue of bellows under an unstable situation, in order to avoid the friction between bellows and stem.
12.The design of guide gasket strengthens the inflexibility of stem, avoids the fluttering phenomenon when medium passing by and improve the service life of bellows.
13.The enlarged medium passing area ensures the flow capacity of valve, avoids high speed passing medium on the sealing face, in this case
erosion, cavity and flash can be restrained effectively.
14.With a guide disc, the valve can be installed vertically, and regulating function can be designed conveniently.