Features of pneumatic ball valve: blocking and secretion: when the valve is closed, the valve seats on the upstream and downstream sides block the liquid, and the deposits in the valve body cavity can be secreted through the secretion equipment. Automatic pressure relief structure: when the pressure in the side cavity is abnormally added, the medium in the middle cavity can rely on its own thrust to push the valve seat for automatic pressure relief, and then ensure the safety of valve lifting. Reliable sealing of valve rod: the valve rod adopts a bottom mounted structure with reverse sealing. The sealing force of the reverse sealing increases with the increase of the medium pressure, so it can ensure the reliable sealing of the valve rod. Moreover, when the valve rod rises abnormally, the valve rod will not eject. Fireproof structure: according to the working conditions and user needs, the ball valve can be planned as a fireproof structure. Anti static structure: when operating the valve, due to the friction between the ball and the valve seat, electrostatic charges will occur and accumulate on the ball. To prevent the occurrence of electrostatic sparks, electrostatic equipment is specially set on the valve to export the charges accumulated on the ball.

Characteristics and Application of Stainless Steel Tetrafluoro Compensator
Characteristics of stainless steel compensator:
1. Compensated thermal shrinkage: it can compensate in multiple directions, which is much better than the metal compensator that can only compensate in single mode.
2. Compensating device error: because the system error is unavoidable in the process of pipe connection, the fiber compensator can better compensate the device error.
3. Noise elimination and vibration reduction: fiber fabrics and thermal insulation cotton have the functions of sound absorption, vibration isolation and transmission, which can effectively reduce the noise and vibration of boiler, fan and other systems.
4. No reverse thrust: Since the main material is fiber fabric, it is unable to transmit. The use of fiber compensator can simplify the design, prevent the use of large bearings, and save a lot of data and labor.
5. Good high temperature resistance and corrosion resistance: the selected fluoroplastics and organosilicon materials have good high temperature resistance and corrosion resistance.
6. Good sealing performance: there is a relatively complete consumer assembly system, and the fiber compensator can ensure no leakage.
7. Light weight, simple structure, easy device maintenance.
8. The price is lower than that of metal compensator, and the quality is better than that of imported products. The price of PTFE compensator is 1/2 - 1/5 of the imported universal stainless steel bellows (hose for short), which is a high-quality flexible pipe in modern industrial pipelines.
The corrugated pipe of the hose is formed by high-precision plastic processing of a very thin seamless or mass welded stainless steel pipe. Due to the elastic characteristics of the corrugated pipe contour, the hose has good flexibility and fatigue resistance, which makes it easy to absorb the cyclic load of various motion deformation, especially in the pipeline system, it has the ability to compensate for large displacement. Corrugated pneumatic butterfly valve has many characteristics such as good flexibility, fatigue resistance, high temperature resistance, upper and lower temperature resistance, corrosion resistance, etc. Its service life is much longer than that of other hoses (rubber and plastic hoses), so it has higher comprehensive economic benefits. With the development of modern industry, the demand for corrugated pneumatic butterfly valves that are resistant to high temperature and high pressure is growing.
Universal stainless steel bellows is mainly composed of bellows, mesh sleeve and joint. The inner pipe of the universal stainless steel corrugated pneumatic butterfly valve is a spiral or annular thin-walled stainless steel corrugated pipe. The outer net sleeve of the universal stainless steel corrugated pneumatic butterfly valve is woven by stainless steel wire or steel strip according to certain parameters. The joints or flanges at both ends of the universal stainless steel corrugated pneumatic butterfly valve for the tetrafluoro compensator are matched with the joints or flanges of the customer's pipeline.
Scope of hose application: flexible walk pipes are required to avoid piping in vibration places, and steam, gas, air, heavy oil, petroleum, chemicals, etc. are used.