Aluminum Lever Lug Butterfly Valve - High-Quality China Suppliers & Factory for DN25-DN300

Provides a leak-tight seal under full rated pressure.

Only the seat and disc are exposed to the flow medium.

Specifically designed to excel in services involving abrasive or erosive media.

Field-replaceable cartridge seat — The seat is composed of a reinforced backing ring with the elastomer vulcanized onto it. Once installed between pipe flanges, this robust seat resists deformation or shifting. The cartridge construction also avoids stretching or bending of the elastomer in front of the moving disc during operation.

Available with numerous material combinations.

Comes with a standardized actuator flange for easy interchangeability of operators.

A top bushing accommodates side thrust loads.

Hub sealing is achieved via preloaded contact between the flattened seat surface and the disc hub, ensuring reliable sealing at any disc position.

The integral wafer-thin disc and stem design minimizes flow restriction.

The seat is field-replaceable, keeping the body and stem out of the flow path.

Integral molded O-rings provide flange sealing, removing the need for separate gaskets.

Universal mounting flange: The cast-in actuator flange conforms to ISO 5211 dimensional standards, accepting a wide range of operators — including 10-position handle kits, gear operators, electric actuators, and pneumatic actuators.