◆ Its structural feature is that while the double eccentric valve stem axis position is eccentric, the conical axis of the butterfly plate sealing surface is skewed to the cylinder axis of the body, that is, after the third eccentricity, the sealing section of the butterfly plate is not Furthermore, it is a true circle but an ellipse, and the shape of the sealing surface is therefore asymmetrical, with one side inclined to the center line of the body and the other side parallel to the center line of the body. The biggest feature of the triple eccentric EPDM seal is that it fundamentally changes the sealing structure, position sealing, but also torsion sealing, relying on the elastic deformation of the valve seat and the contact surface pressure of the valve seat to achieve the sealing effect. It has a simple structure and easy maintenance. Easy installation, zero leakage and other features.

Design Feature+

◆ The butterfly plate adopts a streamlined structure, and the medium flow resistance coefficient is small

◆ The sealing surface of the valve plate adopts EPDM material, which is not easy to corrode and has good sealing performance.

◆ The sealing structure adopts three-eccentric hard sealing structure, namely: radial eccentricity, axial eccentricity, and angular eccentricity. It reduces friction during the opening or closing of the valve, ensuring that the valve opens and closes flexibly, and the tighter the valve is closed, the tighter the seal is. When the valve is opened, the sealing surface is quickly released, reducing wear and extending service life.

◆ Because EPDM is flexible, it can be quickly detached, the operating torque is small, and it is more manual operation, flexible, convenient, and energy-saving.

Design Standard+

◆ Design: API 609

◆ Face to face: API609 / ISO5752-20 / ISO5752-13 / DIN F4 /EN558

◆ Flange end: ASME B16.5 / ASME B16.47 / EN1092-1 / GOST 12815 / Gost 33259 /MSS-SP44

◆ Butt-welding end: ASME B16.25

◆ Test: API598

◆ Fire safe: API607 / API6FA

Technical Specification+

◆ Size: 2”~80”(DN50~DN2000)

◆ Class: 150LB / PN6~PN25

◆ Connection: Double flange / Butt weld / Lug / Wafer

◆ Operation: Worm Gear / Pneumatic actuator / Electric actuator