الوصف

Powder butterfly valve with circular rotation with orange butterfly valve plate to open and close, to enable the action of pneumatic valve main shut-off valve used to do,can be designed to have a section of the valve regulatingor the function and regulation, the butterfly valve in thelow pressure large caliber pipe is used more and more.

The main advantages of powder, butterfly valve has the advantages of simple structure, small volume and light weight, low cost, pneumatic butterfly valve of the notable features, installed in the upper passage, after two position five way electromagnetic valve control, convenient operation, but also adjust the flow media. Fluid resistance small, medium and large caliber of pneumatic butterfly valve fully open when the effective flow area is large, rapid opening and closing effort, dish plate rotate *0 angle to complete the opening and closing, on both sides of the shaft disc plate hand medium force approximately equaltorque direction, the contrary, the smaller opening and closing torque, good sealing can be realized under low pressure butterfly valve sealing material, nitrile rubber,fluorine rubber, rubber, PTFE lined the sealingperformance is good, the hard seal butterfly valve for the hard and soft laminated metal sheet has the advantagesof heavy metal hard seal and elastic seal, no matter in low-temperature conditions both with excellent sealing performance.

Powder butterfly simple structure, small volume, light weight, only by a few parts. But only can be rotated *0 °rapid opening and closing, simple operation, while theelectric valve has a good flow control characteristics.Butterfly valve in the fully open position, the disc thicknessis only when the medium flows through the bodyresistance, thus generated by the valve pressure drop is small, it has a good flow control characteristics. Butterfly valve with elastic metal seal and the seal two kinds of sealed type. Elastic sealing valves, seals can be mounted on the body or attached to the disc periphery.

Metal sealed valves are generally higher than the flexibilityof the valve seal and long life, but it is very difficult to completely seal. Metal seal can adapt to high temperature, flexible seal is restricted by temperature defects.

If asked to use as a flow control valve, the main choice is the right size and type of valve. Butterfly valve structure principle is particularly suitable for production of large diameter valves. Butterfly not only widely used in oil, gas,chemical, general industrial water treatment, but also usedin thermal power plant cooling water system.