Introduction To Soft Seal Butterfly Valves

As a component used to cut off pipeline systems and control flow, soft sealing butterfly valves have been widely used in many fields such as petroleum, chemical, metallurgical, and hydropower. The butterfly plate of the soft sealing butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc shaped butterfly plate rotates around the axis, with a rotation angle between 0 ° and 90 °. When rotated to 90 °, the valve is in a fully open state. The characteristics of the new high life stainless steel butterfly valve and the problems encountered during its use. Soft sealing butterfly valves can be divided into flange type soft sealing butterfly valves, wafer type soft sealing butterfly valves, and welding type soft sealing butterfly valves according to the connection method.
As a component used to cut off pipeline systems and control flow, soft sealing butterfly valves have been widely used in many fields such as petroleum, chemical, metallurgical, and hydropower. In the well-known butterfly valve technology, the sealing form mostly adopts a sealing structure, and the sealing materials are rubber, polytetrafluoroethylene, etc. Due to the limitations of structural characteristics, it is not suitable for industries such as high temperature resistance, high pressure resistance, corrosion resistance, and wear resistance. A relatively advanced butterfly valve is a triple eccentric metal hard seal butterfly valve, with the valve body and valve seat as interconnected components. The sealing surface of the valve seat is welded with heat-resistant and corrosion-resistant alloy materials. The multi-layer soft stacked sealing ring is fixed on the valve plate. Compared with traditional butterfly valves, this type of butterfly valve has the advantages of high temperature resistance, easy operation, no friction when opening and closing, and compensates for sealing with the increase of torque of the transmission mechanism when closing, improving the sealing performance of the butterfly valve and extending its service life.
Product features:
1. Small and lightweight, easy to disassemble and repair, and can be installed in any position.
2. Simple and compact structure, low operating torque, and quick opening with a 90 degree rotation.
3. The flow characteristics tend to be linear, with good regulation performance.
4. The connection between the butterfly plate and the valve stem adopts a pin free structure, which overcomes possible internal leakage points.
5. The sealing element can be replaced, and the sealing is reliable and achieves bidirectional sealing.
6. Butterfly plates can be sprayed with coatings according to user requirements, such as nylon or polytetrafluoroethylene.
7. This valve can be designed as a flange connection and a clamp connection.
8. The driving method can be selected as manual, electric, or pneumatic.