Where to find fixed pneumatic valve factory Hangzhou Tiandun pneumatic valve fixed ball Product Overview: Q647F American Standard ball valve is a high performance pneumatic valve fixed Tiandun newly developed, suitable for long distance pipelines and general industrial pipelines, its strength, security resistance, and other harsh environments designed for a special consideration for a variety of corrosive and non-corrosive media. It is compared with the floating ball, work, force the valve before the fluid pressure on the ball all the produce delivered to the bearing, does not make the ball move to the seat, so the seat will not put too much pressure, so fixed ball valve The torque is small, small seat deformation, stable sealing performance, long life, suitable for high pressure, large diameter occasions. Advanced pre-spring seat assembly, with self-tightening properties to achieve the upstream seal. Each valve has two seats in each direction can be sealed, so the installation does not flow restriction is bidirectional. Fixed pneumatic valve performance: structural characteristics [] has a whole channel, emergency seal, fire and other characteristics. [Full Bore Valve runner] consistent with the pipe diameter and the diameter diameter, more in the pipeline cleaning. [Blocking] and excretion when the valve is closed, on the downstream side of the valve seat to block fluid, integrated governance body cavity matter can be excreted following functions: ① beforehand to check for leaks and damage seat; ② reduction medium pollution valve replacement; ③ at the operating pressure when the valve is fully open or fully closed state, can replace the stem Department stuffing. (Shown in Figure 5 is a sewage drainage device plugs)] [automatic pressure relief valve in the cavity stagnant medium due to temperature rise, and occurs when abnormal elevation, or mounted on the valve seat automatic pressure relief valve. [Fire] double seal structure, when a fire burning after nonmetal seat, media sphere pressed metal sealing surface on the body to prevent the media a lot of leakage, in line with the provisions of API607. [Seal] Emergency seat and stem seal leakage caused when the injury occurs, sealant can play through the grease injection valve instantaneous emergency seal. Fixed pneumatic valve technical parameters: Temperature: -196 ~ 350 ℃; Drive: Pneumatic; Nominal: 150LB-2500LB; nominal diameter: DN50-800,1 "~ 32"; Connection: flange, welding; applicable Medium: water, gas, oil, natural gas and acid corrosive media.