Specific classification of pneumatic butterfly valve
Jan 21, 2022| Specific classification of pneumatic butterfly valve
Pneumatic Flanged Butterfly Valve, Pneumatic Flanged Butterfly Valve This product is composed of a rubber-sealed butterfly valve and a carbon steel or stainless steel valve plate and valve stem. It is suitable for water supply and drainage and gas pipelines with temperature ≤80～120℃, such as food, chemical industry, petroleum, electric power, textile, paper making, etc.
Pneumatic regulating butterfly valve is a 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) pneumatic actuator and a butterfly valve. It is a rotary high-performance regulating valve. Or cut-off valve, equipped with electricity, air valve positioner or solenoid valve, air filter pressure reducer, limit switch (valve position echo device), which can realize proportional adjustment and two-position cut-off of the fluid medium in the process pipeline Control, so as to achieve automatic control of the flow, pressure, temperature, liquid level and other parameters of the fluid medium.
Pneumatic wafer butterfly valve has a novel structure. The valve body is constructed to meet the short-distance wafer structure formed by the narrow pipeline space. The external leakage is zero, and the internal leakage conforms to the national standard.
Pneumatic rubber-lined butterfly valve, the connection method is flange, wafer, the seal is lined with NBR, ethylene-propylene rubber, heat-resistant ethylene-propylene rubber, natural rubber, neoprene, fluorine rubber, PTFE, according to the medium chemical Nature has a more reasonable choice.
Pneumatic fluorine-lined butterfly valve, anti-corrosion fluorine-lined butterfly valve adopts a combination of two valve bodies, the valve seat and the valve body lining are integrated, when the valve is working, only the all-plastic valve seat and the plastic-lined butterfly plate are in contact with the medium, and the product can withstand Corrosion of any medium except molten alkali metal and elemental fluorine, in which the D71F46 valve stem is integrated with the butterfly plate (forging), and the surface is evenly coated 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 flow capacity is strong, and the torque is moderate. Zero leakage of media.
Pneumatic ventilation butterfly valve, features, there is a slit between the valve plate and valve seat, this product is suitable for use in environments with poor air circulation.
The main features of the pneumatic telescopic butterfly valve are as follows: novel and reasonable design, unique structure, light weight, convenient operation, and rapid opening and closing; in addition to the function of adjustment and interception, the telescopic butterfly valve can compensate for the thermal expansion and contraction caused by the temperature difference of the pipeline. It can provide convenience for installation, replacement and maintenance of valves. The sealing parts can be adjusted and replaced, and the sealing performance is reliable.