China butterfly valve - pneumatic butterfly valve classification

Author:China butterfly valve     Published time:2018-06-24 11:16     Reading times:251    

China butterfly valve classification: pneumatic butterfly valve, electric butterfly valve, manual butterfly valve, pneumatic butterfly valve which is divided into pneumatic flange butterfly valve, pneumatic butterfly valve, pneumatic wafer butterfly valve, pneumatic rubber lined butterfly valve, pneumatic lined fluorine butterfly valve, pneumatic ventilation butterfly valve, pneumatic expansion Butterfly valves, etc. The specific introduction of butterfly valves in China is as follows:


Pneumatic Flange Butterfly Valve, Pneumatic Flange Butterfly Valve This product consists of rubber seal butterfly valve and carbon steel or stainless steel valve plate and valve stem. Suitable for temperature ≤ 80 ~ 120 °C, such as food, chemical, petroleum, electric power, textile, paper and other water supply and drainage, gas pipelines to regulate the flow and cut off the role of media.


Pneumatic butterfly valve is a type of valve (valve plate) that rotates around a fixed axis perpendicular to the channel. It consists of a piston-type double-acting or single-acting (spring-return type) pneumatic actuator and a butterfly valve. It is a rotary high-performance adjustment. Or cut off the valve, equipped with electricity, gas valve positioner or solenoid valve, air filter pressure reducer, limit switch (valve position feedback device), can achieve the proportion of fluid medium in the process pipeline adjustment and two cut off Control to achieve automatic control of fluid medium flow, pressure, temperature, level and other parameters.


Pneumatic wafer-type butterfly valve, novel structure, valve body structure to meet the narrow space of the pipe formed by the short distance clip-on structure, external zero leakage, internal leakage in line with national standards.


Pneumatic rubber-lined butterfly valve with flange connection, clamp, sealed inner lining with NBR, EP rubber, heat-resistant ethylene-propylene rubber, natural rubber, neoprene rubber, fluorine rubber, PTFE, according to media chemistry Nature has more reasonable choices.


Pneumatic-lined Fluorine Butterfly Valves and Corrosion-Resistant Fluorine Butterfly Valves adopt two-piece valve body combination. The valve seat and the valve body are integrated. When the valve is working, only the plastic seat and the plastic-lined butterfly plate contact with the medium. The product can withstand Any medium other than molten alkali metal and elemental fluorine is corroded, in which the D71F46 valve stem is integrated with the butterfly plate (forging) and the surface is uniformly covered with a layer of FEP. The inner surface of the valve body channel is smooth, the fluid resistance is small, the CV value is high, the circulation ability is strong, the torque is moderate, and the four-stage sealing structure is adopted and the elastic cushioned valve seat of SI rubber with temperature resistance and aging resistance is completely outside the sealing surface. Zero leakage of media.


Pneumatically ventilated butterfly valve, characterized by a slit in the valve seat, suitable for use in environments with poor air circulation.


The main features of the pneumatic telescopic butterfly valve are as follows: the design is novel, reasonable, unique structure, light weight, easy operation, rapid opening and closing; In addition to the adjustment and closure function, the expansion and contraction of the butterfly valve can compensate the thermal expansion and contraction of the pipe temperature difference, but also It can provide convenience for installation, replacement and maintenance of China butterfly valve. Sealing parts can be adjusted for replacement and reliable sealing performance.

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