Stainless steel valves [1] is a pipeline valve for controlling fluid delivery system components, it is used to change the channel section and flow direction of medium, having a diversion, off, adjust the throttle, check, diversion or overflow relief functions . For fluid control valves, valves, from the simplest to the most complex shut-off valve in the automatic control system used in its many varieties and specifications, the valve nominal diameter from large to tiny instrument valve diameter of up to 10m industrial pipeline valves. Ultra-high pressure valve can be used to control the flow of water, steam, oil, gas, slurry, a variety of corrosive media, liquid metals and radioactive fluids and other types of fluid, the valve working pressure from 0.0013MPa to 1000MPa, the working temperature from the ultra-low temperature of -269 ℃ to a high temperature of 1430 ℃. The control valve may be a variety of transmission methods, such as manual, electric, hydraulic, pneumatic, worm, electromagnetic moving, electromagnetic - hydraulic, electro - hydraulic, gas - hydraulic, spur gear, bevel gear drive, etc. ; may be under the influence of pressure, temperature, or other forms of sensor signals, according to a predetermined action requested, or do not rely on the sensor signal and simple to open or close the valve being driven or automatic mechanism for lifting member to open and close the slide shift, rotating pendulum or rotary motion, thus changing the size of its flow area to achieve its control function.