ZJHM Precision Pneumatic Thin Film Sleeve Regulating Valve Pneumatic Sleeve Regulating Valve Manufacturer DN200

Description :

　　1. Product Overview

　　The ZJHM pneumatic sleeve regulating valve (pneumatic precision small sleeve regulating valve, pneumatic thin film sleeve regulating valve) is composed of a multi spring pneumatic thin film actuator and a top guided straight through low flow resistance single seat valve. It has a compact structure, light weight, sensitive action, S-shaped fluid channel, low pressure drop loss, large valve capacity, and flow characteristics. When equipped with electric pneumatic valve positioning or pneumatic valve, it can achieve automatic adjustment and control of process pipeline fluid medium. It is widely used to control process parameters such as pressure, flow rate, temperature, liquid level, etc. of gas, liquid, steam and other media to maintain them at given values. It is a new generation of universal regulating valve products that comply with IEC standards.

　　structural characteristics

　　The ZJHM pneumatic sleeve regulating valve is the execution unit of instruments in automation control systems. It adopts an electric pneumatic valve, powered by electrical signals and compressed air, and receives 0-10mA DC or 4-20mA DC current signals input by the control system. The regulator converts the compressed air into gas source pressure signals for input and output, which can achieve split range control (range signal), thereby changing the valve opening displacement and achieving process parameter adjustment and control of fluid media

　　The ZJHM pneumatic sleeve regulating valve can be divided according to its operating mode;

　　Positive effect: Air closed normally open type (valve position shifts downward when signal pressure increases), Type B

　　Reaction: Air opening normally closed type (when the signal pressure increases, the valve position shifts upward), K-type

　　The pneumatic sleeve regulating valve adopts a balanced valve core, with small unbalanced force and stable operation, suitable for working environments with large pressure difference and slightly large leakage before and after the valve.

　　The straight through low flow resistance sleeve valve adopts a pressure balanced valve core (double sealing surface or single sealing surface) structure. The valve core is cylindrical, and a certain characteristic window hole is precisely machined. It is guided by the inner circle and top of the sleeve, so the unbalanced force on the valve stem is small, the operation is stable, and the performance is good. It is a force balanced regulating valve. Suitable for situations where the pressure difference between the front and rear ends of the valve is high. Due to the side guidance of the sleeve on the valve core, the vibration caused by vortex impact is reduced, resulting in low noise, small cavitation flash evaporation effect, and long service life. But the leakage rate of the valve seat is slightly higher than that of a single seat valve.

　　By changing the design of the valve core shape; Different valve core window shapes will result in different flow characteristic values: equi percentage (logarithmic) and linear.

　　This series of products is widely used in the automation and remote control of industrial production processes such as chemical, petroleum, metallurgy, power plants, textiles, papermaking, and pharmaceuticals.

　　There are various types including standard type, adjustable cutting type, corrugated pipe sealing type, jacket insulation type, etc. The product pressure rating is PN1.6 4.0 6.4MPa; Nominal diameter DN20~300mm; The applicable fluid temperature ranges from -60 ℃ to+450 ℃; According to the temperature, different valve covers can be divided into room temperature type, high temperature type, and low temperature type.

　　2. Standard technical parameters

　　3. Physical pictures

　　4. Company actual shooting

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