Manual Butterfly Valves Product model: d71x-6 / 10 / 16
Butterfly valve is a widely used valve, which can be divided into manual, pneumatic, electric, analog control, etc; According to the sealing form, it can be divided into soft seal and hard seal; According to the valve structure, it can be divided into midline butterfly valve and eccentric butterfly valve; According to the connection form, it can be divided into wafer type and flange type, etc.
Butterfly valve is applicable to pipelines conveying various corrosive and non corrosive fluid media in urban water supply and drainage, sewage, seawater, coal water, generator, gas, natural gas, liquefied petroleum gas, urban gas, hot and cold air, chemical smelting, power generation and environmental protection, and is used to regulate and cut off the flow of media.
Features of butterfly valve:
a. Butterfly valve has the characteristics of simple structure, small volume, light weight, low material consumption, small installation size, fast switching, 90 ° reciprocating rotation, small driving torque, etc. it is used to cut off, connect and adjust the medium in the pipeline, and has good fluid control characteristics and closing sealing performance.
b. The butterfly valve can transport mud, and the liquid accumulated at the pipe mouth is the least. Good sealing can be achieved under low pressure. Good adjustment performance.
c. The streamline 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, which has been quenched and tempered, and has good comprehensive mechanical properties, corrosion resistance and scratch resistance. When the butterfly valve is opened and closed, the valve stem only rotates without lifting operation. 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 valve is divided into controlled pneumatic and electromagnetic pneumatic. The device equipped with manual control is a three position four-way valve + a triplet; The electromagnetic control is a solenoid valve + a triplet. They are all equipped with cylinders and responders.
Self Pneumatic Butterfly Valves Product model: d671x-6 / 10 / 16
The automatic pneumatic butterfly valve is also called the proposed control butterfly valve. Its function is the same as the analog control knife gate valve. It is mainly a valve control mode that can realize remote control. The valve can be easily controlled in the central control room. A positioner and an air pressure reducing valve are installed on the basis of the original pneumatic valve. This positioner needs to input 4 ~ 20mA input signal at EP end, and there should be a 4 ~ 20mA output signal at PTM end, that is, feedback signal. Through this feedback signal, the computer in the central control room can clearly know what state the valve is in at any time, so as to reduce the labor force of personnel, and there is no need to go to the site to observe the opening and closing state of the valve. Generally, the feedback signal current of this positioner has passed the setting at the factory, and its error will not exceed 0.5mA.
