Product overview

D671x pneumatic double clip butterfly valve adopts double eccentric structure, which has the sealing function of closing more tightly, and the sealing performance is reliable. Stainless steel and NBR oil resistant rubber are used as sealing materials, which have long service life. The rubber seal ring can be located on the valve body or butterfly plate. It can be used in different media for users to choose. The butterfly plate adopts frame structure with high strength, large flow area and small flow resistance. It can be used in different media as long as the sealing material of sealing valve seat is replaced. D671x pneumatic double clip butterfly valve has two-way sealing function. It can be installed in any direction without the control of medium flow direction and space position. The valve has unique structure, flexible operation, labor saving and convenience.

Structural features

D671x pneumatic double clip butterfly valve adopts the sandwich center plate structure, which is mainly composed of valve body, valve plate, valve shaft, valve seat and transmission device. It has simple and compact structure, small size and light weight, convenient transportation, installation and disassembly; 90 ° opening and closing, quick opening and closing, small operation torque, labor saving and lightweight; good sealing performance, long service life, and zero leakage; its flow characteristics are similar to straight line, Good regulation performance. The valve is a rubber seal. When closed, the butterfly plate and valve seat have good sealing performance, two-way sealing performance is excellent, and the torque value is small. The valve maintains 100% zero leakage under working pressure, and the friction between butterfly plate and seat seal is small. D671x pneumatic double clip butterfly valve is driven by the valve shaft, and the valve plate rotates 90 degrees. The butterfly plate can be opened and closed flexibly without jamming and jumping, and the torque is small.

Purpose

The d671x pneumatic double clip butterfly valve is widely used in waterworks, power plants, steel mills, papermaking, chemical industry, light textile, food and other water supply and drainage, gas pipelines for regulating flow and intercepting medium.

Technical parameters of pneumatic actuator

D671x pneumatic double clip butterfly valve adopts new Series GT type pneumatic actuators, including double acting type and single acting type (spring return), gear transmission, safe and reliable; large diameter valve adopts aw type pneumatic actuator fork type transmission, with reasonable structure and large output torque.

1. Cut off type accessories: single electric control solenoid valve, double electric control solenoid valve, limit switch feedback device

2. Adjustable accessories: Electric positioner, pneumatic positioner and electric converter

3. Air source treatment accessories: air filter pressure regulating valve, air source treatment triple parts

4. The electric pneumatic valve positioner is adopted, which is powered by electric signal and compressed air, receives 0-10mA DC or 4-20mA DC current signal from the control system. The regulator converts the compressed air into the air source pressure signal input and output, and changes the rotation angle of the valve plate (0-90 ° arbitrary angle), which has better parameters such as flow regulation and control

5. Using electromagnetic directional valve, valve position feedback device, AC 220 V or DC 24 V power supply voltage and compressed air as power, fast two position cut-off control of fluid medium is realized. The pneumatic actuator adopts piston cylinder and crank arm conversion structure, with large output torque, small volume, fully sealed waterproof design and high protection level

6. The cylinder block adopts mirror cylinder, no oil lubrication, small friction coefficient, corrosion resistance, super durability and reliability. All drive bearings adopt boundary self-lubricating bearing without oil lubrication to ensure that the transmission shaft is not damaged

Main shape and connection dimension

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