Eccentric Butterfly Valve
The multi-layer hard seal butterfly valve is an eccentric metal seal structure. Its structure and functional characteristics can be divided into double eccentric butterfly valves, triple eccentric butterfly valves, and more advanced four eccentric butterfly valves. The sealing form is metal-to-metal sealing, and the metal sealing rings can be exchanged. Metal seal, stainless steel plate and graphite composite plate seal ring to metal seal.
Manufacturing Range
Body material: carbon steel, stainless steel, alloy steel
Full bore and reduced bore design
Nominal diameter: DN50-DN2000
Pressure range: PN6-PN40
Structure Type: double eccentric, three eccentric, four eccentric
Connection End：Butt welding, Flange, Clamp, Lug
Working temperature: -196℃~150℃
Operation: Manual,Worm-gear,Pneumatic actuator, Electric actuator
Design Features
Eccentric structure;
hard sealing material;
Sealing ring design;
Two-way sealing;
Fire performance;
Diversification of driving forces
Design Standards
Design and Manufacture：API 609、JB/T 8527
Face to Face Dimension：ASME B 16.10、GB/T 12221
Flange Connection Dimension：ASME B 16.5、GB、JB、HG、SH、BS、DIN、JIS
Test and Inspection：API 598、GB/T 13927、GB/T 26480、JB/T9092、ISO 5208
