Soft Seal Butterfly Valve

Product Overview

Soft seal butterfly valve is a kind of valve whose closing part (butterfly plate) is a disc and rotates around the valve shaft to open and close. It mainly plays the role of cutting off and throttling on the pipeline. The butterfly plate is driven by the valve rod. If it is turned 90 degrees, it can be opened and closed once. By changing the deflection angle of the butterfly plate, the medium flow can be controlled. The commonly used butterfly valves are clip type butterfly valve, lug type butterfly valve and flange type butterfly valve.
Butterfly valve is suitable for producing furnace, gas, natural gas, liquefied petroleum gas, city gas, cold and hot air, chemical smelting and power generation environmental protection, building water supply and drainage and other engineering systems to transport all kinds of corrosive and non corrosive fluid medium, used to regulate and cut off the flow of medium.

Structural Characteristics

1. The valve adopts double eccentric structure, which has the sealing function of closing more tightly, and the sealing performance is reliable;
2. Stainless steel and NBR oil resistant rubber are used as sealing materials, which have long service life;
3. The rubber seal ring can be located on the valve body or butterfly plate. It can be used for different media for users to choose;
4. High area and high strength baffle plate;
5. As long as the sealing valve seat material is replaced, it can be used in different media;
6. The valve body has the function of two-way sealing. It is not controlled by the flow direction of medium or affected by the space position. It can be installed in any direction;
7. The valve has unique structure, flexible operation, labor saving and convenience.

Execution Standard

Design specification: GB/T12238
Flange connection: GB/T9113, GB/T172416
Structure length: GB/T12221
Tests and inspection: GB/T13927

Performance Parameter

Main materials: WCB, QT450-10, HT200, HT250
Product specification: DN50~2000mm
Pressure class: PN0.6~ 1.6mpa
Suitable medium: water, air, natural gas, oil and weakly corrosive fluid
Applicable temperature: nitrile rubber -40℃~90℃, fluororubber -20℃~200°C
Driving mode: worm wheel drive, electric, pneumatic

Product Dimensions