Proportional integral regulating pneumatic butterfly valve

比例积分调节式气动蝶阀By inputting 4-20mA or 0-10V electrical signals, the pneumatic actuator and valve positioner are linked to adjust the butterfly plate opening in real-time, achieving precise control of flow or pressure, and supporting feedback signal output (such as 4-20mA) to form a closed-loop regulation system.
Adopting a double acting/single acting pneumatic device with a gas source pressure range of 4-7 bar, combined with spring reset or dual cylinder design, to ensure quick recovery to the preset state in case of power failure or malfunction.
Valve body material: ductile iron, cast steel, 304, 316
Valve plate material: nickel plated ductile iron, nylon plate, 304, 316, 316L, 1.4529, 2507
Valve seat material: EPDM, NBR
Connection method: clamp type, optional double flange
Flange standards: GB, ANSI, JIS, DIN
Pressure level: PN16
Pneumatic actuator: double acting, single acting normally closed, single acting normally open
Pneumatic accessories: solenoid valve, air filter pressure reducing valve, electrical locator, handwheel, etc

The proportional adjustment pneumatic butterfly valve 4-20mA control is composed of a butterfly valve and an actuator matched with an electrical locator. The pneumatic butterfly valve is matched with the electrical locator, and intelligent control can be achieved by inputting 4-20mADC signal and 0.4-0.7MPa gas source, realizing the adjustment of parameters such as pressure, flow rate, temperature, liquid level, etc. It is powered by compressed air, and the valve stem drives the valve core to rotate 90 ℃ inside the valve body, achieving a fully open to fully closed action. This product is divided into metal seals and soft seals based on its sealing performance. It can be widely used in automatic control systems for industries such as petroleum, chemical, light industry, pharmaceuticals, papermaking, and automobiles for remote centralized control or on-site control.