Views: 297 Author: Site Editor Publish Time: 2021-10-17 Origin: Site
Pneumatic butterfly valve is a kind of commonly used valve control instrument, which uses the round butterfly plate rotating with the stem to open and close. The pneumatic operated gate valve which realizes the start-up action is mainly used as block valve.
Pneumatic flange butterfly valve is composed of rubber sealed lug body butterfly valve, carbon steel valve plate or stainless-steel valve plate, and valve stem, which is suitable for occasions with temperature of 80 ℃ ~ 120 ℃, such as food, chemical industry, petroleum, electric power, light textile, papermaking, water supply, and gas pipelines to regulate flow and intercept medium.
Pneumatic control sandwich butterfly valve is a kind of valve rotating around the fixed axis perpendicular to the channel, which is composed of piston type double acting or single acting (spring return type) pneumatic actuator and single eccentric butterfly valve. It is a kind of rotary high-performance regulating or shut-off valve, which can be matched with air valve positioner, solenoid valve, air filter pressure reducer, or limit switch (valve position feedback device). The pneumatic operated butterfly valve can not only realize the proportion adjustment and two position cut-off control of the fluid medium in the process pipeline, but also achieve the automatic control of the flow, pressure, temperature, liquid level, and other parameters of the fluid medium.
The structure of the pneumatic clip on butterfly valve is novel, whose valve body structure is a short distance clip on structure to meet the narrow pipe space.
Pneumatic rubber lined butterfly valve can be connected by flange and clamp, whose sealing lining includes NBR, EPDM, heat-resistant EPDM, natural rubber, chloroprene rubber, fluoro-rubber, and polytetrafluoroethylene, so you can have a more reasonable choice according to the chemical properties of the medium.
The anti-corrosion fluorine lined butterfly flange valve adopts the combination of two-piece valve, whose valve seat and valve body lining are integrated. When the valve works, only the all plastic seat and the plastic lined butterfly plate are in contact with the medium. The product can withstand any medium corrosion except molten alkali metal and element fluorine. Among them, D71f46 stem and butterfly plate (forging) are integrated, whose surface is evenly coated with a layer of FEP. The inner surface of the valve channel is smooth, so the fluid resistance is small and the flow ability is strong. The valve body adopts a four-stage sealing structure and is equipped with an elastic resilient cushion seat of SI rubber with temperature resistance and aging resistance outside the sealing surface, which can completely achieve zero leakage of the medium.
The characteristic of the pneumatic ventilation signal butterfly valve is that there is a slit between the valve plate and the valve seat, which is suitable for use in the environment with poor air circulation.
The main features of pneumatic telescopic butterfly shut off valve include novel design, reasonable design, unique structure, light weight, convenient operation, and quick opening and closing. In addition to the functions of regulating, intercepting, and compensating the thermal expansion and cold contraction caused by the temperature difference in the pipeline, the pneumatic telescopic full bore butterfly valve can also provide convenience for the installation, replacement, and maintenance of the valve.
