Reaction of valve positioner: when the input current signal increases, the air pressure output to the diaphragm head decreases;

With the continuous progress of the society and the acceleration of the industrialization process, pneumatic butterfly valves are widely used in the establishment of modernization as important components of industry. Pneumatic butterfly valves are often used in places such as wires, cables, civil shower hoses, wire and cable maintenance tubes for automatic instrument signals, etc. Pneumatic butterfly valves range in size from 3mm to 150mm. The inner diameter of small caliber pneumatic butterfly valve is between 3mm and 25mm, which is mainly used for the maintenance of fine optical ruler sensing line and industrial sensor line. How much is the pneumatic butterfly valve? How much is the price of pneumatic butterfly valve?
How much is the pneumatic butterfly valve? Because the style, function, material and specification of pneumatic butterfly valve in the market are different, the price of pneumatic butterfly valve is also very different. The threading pneumatic butterfly valve is made of 304 stainless steel or 301 stainless steel. It is used as the wire and cable maintenance tube for cables, wires and automatic instrument signals, with specifications ranging from 3mm to 150mm. The inner diameter of the ultra small diameter pneumatic butterfly valve is 3mm~25mm, which is mainly used for the maintenance of industrial sensor lines and the sensor lines of fine optical ruler. It has good flexibility, high temperature resistance, wear resistance, corrosion resistance and tensile resistance. The price of threading pneumatic butterfly valve is 30-45 yuan/meter.
Corrugated pneumatic butterfly valve is a kind of flexible pipeline in modern industrial pipeline, which is mainly composed of mesh sleeve, joint, corrugated pipe, etc. The inner tube is a spiral or annular corrugated thin-walled stainless steel bellows, and the net sleeve of the outer layer of the bellows is made of stainless steel wire or steel strip according to certain parameters. From the structural point of view, the corrugated pneumatic butterfly valve has two kinds of materials, namely, strip and pipe, forming annular bellows and spiral bellows. It is a kind of high-quality flexible pipeline in the field of modern industry. The price of corrugated hose is between 40-70 yuan/meter.
The inner layer of plastic coated pneumatic butterfly valve adopts stainless steel hose and galvanized hose for special insulation treatment. Plastic coated hose has excellent waterproof, insulation, tensile strength and other advantages. The appearance is made of PVC materials and added with fire retardant. At the same time, the plastic coated hose is of single button and double button type, which greatly increases the tensile strength and is not easy to break and deform. The price of plastic coated hose is between 30-50 yuan/meter.
Current situation of pneumatic butterfly valve industry