Butterfly Valves

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Butterfly Valves


Manual Butterfly Valve        

Product Model: D71X-6/10/16

Butterfly valve is a widely used valve, according to the driving form can be divided into manual, pneumatic, electric, analog control and so on; according to the sealing form can be divided into soft seal, hard seal; according to the valve structure can be divided into midline butterfly valve and eccentric butterfly valve; according to the form of connection can be divided into clamping and flange type and so on.

The valve is suitable for urban water supply and drainage, sewage, sea water, coal water, generator, gas, natural gas, liquefied petroleum gas, city gas, hot and cold air, chemical smelting and power generation environmental protection and other engineering systems conveying all kinds of corrosive and non-corrosive fluid on the pipeline, used to regulate and cut off the flow of the medium.


◆The butterfly valve has the characteristics of simple structure, small size, light weight, low material consumption, small installation size, rapid switching, 90° reciprocating rotation, and small driving torque. It is used to cut off, connect, and adjust the medium in the pipeline,which has good fluid control characteristics and close sealing performance.

The butterfly valve can transport mud, with the least accumulation of liquid at the pipe opening. Under low pressure, good sealing can be achieved. and the adjustment performance is good.

The streamlined design of the butterfly plate makes the fluid resistance loss small, which can be described as an energy-saving product. d. The valve stem is a through-rod structure, after quenching and tempering, it has good comprehensive mechanical properties, corrosion resistance and scratch resistance. When the butterfly valve is opened and closed, the valve stem only rotates and does not move up and down, the packing of the valve stem is not easy to be damaged, and the sealing is reliable.


Pneumatic Butterfly Valve

Product Model: 671X-6/10/16

Pneumatic butterfly valves are divided into two types: manual control pneumatic and electromagnetic pneumatic. The device for manual control is a three-position four-way valve + a triplet; the electromagnetic control is a solenoid valve + a triplet. They are equipped with air cylinders and echo transmitters.




Self-pneumatic Butterfly Valve

Product Model: D671X-6/10/16

Self-pneumatic butterfly valve is also called analog control butterfly valve, and its function is the same as analog(simulation) control knife gate valve. It is mainly a valve control method that can realize remote control. The valve can be controlled very easily in the centralized control room. This valve is based on the original pneumatic valve with a positioner and an air pressure reducing valve. This positioner needs to input a 4-20mA input signal from the EP terminal, and a 4-20mA output signal at the PTM terminal, which is the feedback signal. The computer in the centralized control room can know at a glance that the valve is in what kind of state at any time through this feedback signal. , thereby reducing the labor of personnel, and they no longer need to go to the scene to observe the opening and closing state of the valve. Generally, the feedback signal current of this positioner has passed the setting before leaving the factory, and its error will not exceed 0.5mA.