Double Offset Butterfly Valve

The butterfly plate (that is, the valve disc) of the double eccentric butterfly valve has two eccentricities relative to the center line of the valve body, one is axial eccentricity and the other is radial eccentricity. This design allows the disc to first detach from the seat during opening, then rotate to the full open position, and reverse operation during closing. Double eccentric butterfly valve is mainly composed of valve body, valve plate, valve core, valve seat, valve cover, support rod, shaft head, cover, detector, gasket body and other components.

• High pressure and long life: Compared with the center line butterfly valve, the double eccentric butterfly valve is more resistant to high pressure, longer life and good stability.

• Large flow: Double eccentric butterfly valves use the butterfly plate as a valve, relative to other types of valves, its flow is larger, adjustable range is also wider.

• Wide temperature range: can be applied to a wide temperature range of fluid media control, can meet the needs of different industries and fields.

• Good sealing: the internal sealing structure formed by the combination of the eccentric structure of the butterfly plate and the valve seat makes the sealing of the double eccentric butterfly valve very good, which can effectively avoid the occurrence of air leakage and water leakage.

• Simple structure: composed of a small number of parts, easy maintenance and repair.

Size:                         DN50~DN3000 (2"~120")

Design Standard:     ANSI,JIS, GB, BS

Conenntion Flange: ASME B16.5, EN 1092

Face to Face:            API609, EN558, ISO 5752

Test Standard:          API598, EN12266-1

Working Pressure:    CLASS150, CLASS300, PN10/16/25/40

Materials:                  Valve body Valve plate WCB, CF8, CF8M, CF3, CF3M, MONEL, HAS, ALLOY, etc

                                  Valve seat PTFE, RTFE, PPL, PEEK, etc

Body and Disc:         WCB, CF8, CF8M, CF3, CF3M, MONEL, HAS, ALLOY etc.

Seat:                         PTFE, RTFE, PPL, PEEK etc.

Types:                       Lug, Wafer, Flanged