Concentric Butterfly Valve

The GAIRUI Wafer Concentric Butterfly Valves, as a component used to cut off and control the flow of pipeline system, has been widely used in many fields, such as oil, chemical, metallurgical and hydroelectric fields. In the known butterfly valve technology, its sealing form mostly adopts the sealing structure, and the sealing material is rubber, polytetrafluoroethylene and so on. Due to the limitation of structural characteristics, it is not suitable for such industries as high temperature, high pressure, corrosion resistance and wear resistance. A more advanced butterfly valve is three eccentric metal hard seal butterfly valve, the valve body and the seat are connected components, and the sealing surface layer of the seat is surfacing with temperature resistant and corrosion resistant alloy materials. The multi layer soft superimposed seal is fixed on the valve plate. This butterfly valve has the high temperature resistance compared with the traditional butterfly valve, the operation is light and open and closed without friction. The valve is compensated and sealed with the torque of the transmission mechanism in the closed, and improves the sealing performance of the butterfly valve and the advantages of prolonging the service life.

The Lug Concentric Butterfly Valves can be selected by manual, worm, pneumatic and electric. The connection mode can choose flanges and pair clips. The structure forms can choose single eccentricity, middle line, double eccentricity and three eccentricity. The sealing structure can choose soft seal, hard seal and pressure range PN0.1-10Mpa. The common name is DN40 to 2000mm, the material can be selected. Cast steel and stainless steel.

The Flanged Concentric Butterfly Valves uses a polytetrafluoroethylene lined butterfly plate with a spherical seal surface. The valve operates light, tight sealing performance and long service life, and can be used for fast cutting or regulating flow. It is suitable for occasions requiring reliable sealing and good regulation characteristics. The valve body is divided into body type, and the seal at both ends of the valve shaft is controlled by the rotating base surface and the fluorine rubber between the butterfly plate and the valve seat, and the valve shaft is not contacted with the fluid medium in the cavity. It is widely used for the transportation of liquid and gas (including steam) in various types of industrial pipes, and has serious corrosive medium, such as sulfuric acid, hydrofluoric acid, phosphoric acid, chlorine gas, strong alkali, and aqua regia.

Applicable media of U-type butterfly valve: fresh water, sea water, air, steam, food, medicine, and various oils, acids, alkalis, salts, etc. Features: long service life, reliable sealing performance and no regular maintenance. The flow characteristic of butterfly valve is 3 times that of stop valve and 75% of that of gate valve of the same specification. Butterfly valve can realize the switching and regulating functions of fluid in the pipeline. Compared with gate valve and stop valve, it has better multifunctional type. With a variety of choices of Internals and elastic materials, butterfly valves are widely used in the chemical field.