Single Flange Butterfly Valve

Purpose of flange butterfly valve: Flange butterfly valve is mainly used in industrial production pipelines. Its main function is to block the medium flow in the pipeline or adjust the size of the medium flow in the pipeline. Flange butterfly valves are widely used in production pipelines in water industry, water treatment, petroleum, chemical industry, urban heating and other general industries, and are also used in condensers and cooling water systems of thermal power plants. Flange butterfly valve is particularly suitable for the production of large diameter valves. Widely used in large diameter adjustment fields. When the flange butterfly valve is fully open, the flow resistance is low. When the opening angle of the butterfly plate is about 15-70°, the butterfly valve with flange can control the medium flow very sensitively. In addition, as the flange butterfly valve rotates, the butterfly plate is also wiped clean, allowing this valve to be used in pipelines with suspended particles. Depending on the strength of the seal, this type of valve may also be used. For use in piping for powder and granular media.

Classification of flange butterfly valves: According to the material of the sealing surface, flange butterfly valves can be divided into soft sealing flange butterfly valves and hard sealing flange butterfly valves.

Soft sealing flange butterfly valve

Soft-sealing flange butterfly valves use rubber, fluororesin and other elastic sealing materials, while hard-sealing flange butterfly valves use metal and metal, and metal and fluorine are combined. Plastic and multi-layer composite panels.

The soft sealing flange butterfly valve sealing ring can be inserted into the valve body channel and surrounds the butterfly plate. When used as a stop valve, its sealing performance reaches FCI70-2:2006 (ASMEB16~104) Class VI, which is much higher than that of butterfly valves with hard sealing flanges, but the soft sealing material is limited by the operating temperature. Therefore, with soft sealing flange Butterfly valves are commonly used in room temperature water conservation and water treatment areas.

Hard seal flange butterfly valve

Metal hard-sealed flange butterfly valves have material advantages, can adapt to higher working temperatures, higher working pressures, and have a longer service life than soft seals. The disadvantages of hard-sealed flange butterfly valves are also obvious. It is difficult to achieve a perfect seal, and the sealing performance is not as good as a soft seal. Therefore, this type of flange butterfly valve is usually used to regulate flow when the sealing performance is not high.

Application: General
Place of Origin: Shandong, China
Power: Manual
Structure: BUTTERFLY
Customized support: OEM, ODM, OBM, Software reengineering
Port Size: DN40-DN600
Warranty: 3 years

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