Pneumatic Gate Valve (API Spec 6A and SY/5127) The valve has safety valve and hydraulically derive, which is the main part in safety system in wellhead. By injecting a high-pressure air into the cylinder to reduce spring cylinder and open the valve. When in the risk, the actuator transmitted by the sensor to unload the pressure in cylinder in order to close the valve. Standard: API Spec 6A and SY/5127 Working principle: By using the hand wheel and cylinder to

Stainless Steel Wedge Gate Valve Gate valve connected by high or medium pressure flange works under nominal pressure of PN1.6~16.0MPa and its working temperature is ≤ -29~550 It can be used for pipes in various systems of petroleum,  Design and Manufacturing GB/T12234 Size of the connector Structure Length GB/T12221 Flange Size JB79  Material Carbon steel GB/T12229 Stainless steel GB/T12230 Symbol GB/T12220 Supply JB/T7928