D643W-16RL stainless steel single acting pneumatic flange butterfly valve

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D643W-16RL stainless steel single acting pneumatic flange butterfly valve

D643W-16RL stainless steel single acting pneumatic flange butterfly valve

Product Features:
1. This valve adopts a three eccentric sealing structure, with almost no wear on the valve seat and butterfly plate, and has a sealing function that becomes tighter as viewed.
2. The sealing ring is made of stainless steel, which has the dual advantages of metal hard sealing and elastic sealing. It has excellent sealing performance in both low and high temperatures, corrosion resistance, and long service life.
3. The sealing surface of the disc plate is made of welded cobalt based hard alloy, which is damaged and has a long service life
4. The large-sized butterfly plate adopts a frame structure with high strength, large overcurrent area, and low flow resistance.
5. This valve has a bidirectional sealing function, which is not limited by the flow direction of the medium or the spatial position during installation, and can be installed in any direction.
6. The drive device can be installed in multiple stations (rotated 90 ° or 180 °) for easy user use.

Product Overview

Pneumatic flange butterfly valves are usually composed of angular stroke electric actuators (0-90 ° partial rotation) and butterfly valves that are mechanically connected and installed and debugged together. The electric flange butterfly valve has a simple structure, small size, and light weight, and is composed of only a few parts. When the electric flange butterfly valve is in the fully open position, the thickness of the butterfly plate is the resistance of the medium flowing through the valve body. Therefore, the pressure drop generated by this valve is very small, and it has good flow control characteristics. Electric flange butterfly valves mainly have two structural forms: triple eccentric and single eccentric. The sealing forms include metal sealing, PTFE sealing, and rubber sealing. The metal sealing structure is mainly suitable for working conditions above 300 degrees Celsius; The PTFE sealing structure is suitable for working conditions within ≥ 180 degrees; The PTFE sealing structure is suitable for working conditions up to 120 degrees Celsius; The angular stroke electric actuator used with the flange type electric butterfly valve can directly receive 4-20mADC or 1-5VDC control signals output by computers or industrial instruments. Based on the deviation between the valve position feedback signal and the set value, the actuator drive motor is intelligently step adjusted (PID adjustment) to achieve the positioning of the valve or other device opening that is matched with the actuator, while outputting 4-20mADC position feedback signals. At present, flange type electric butterfly valves are mainly used in various fields such as petroleum, chemical, metallurgical, light industry, papermaking, power plants, refrigeration, etc.