Double Eccentric Butterfly Valve

Double flanged range of valves are double eccentric design butterfly valves. These are available in cast as well as fully fabricated design. The face to face dimensions can be either as per BS or as AWWA

These valves incorporate a double offset disc design, which practically eliminates any seat wear. The fully replaceable seat provided on the disc periphery is field replaceable imd is capable of achieving bi-directional sealing. The rubber seat seals against a St. Steel seat ring integrally welded with the body.

1. Perfectly machined stainless steel seat ring with specially designed sealing profile of the rubber ensures continued tight shut off sealing and makes it an ideal choice for flow isolation and shut off duties.
2. The double offset disc design ensures minimal seat wear and provides excellent throttling capabilities, which makes it an ideal chice for flow control duties also.
3. Adjustable mechanical stopper provided on Valve body ensures precise closing of the disc without over/under travel.
4. Actuator (operator) mourning flange standardized to ISO 5211 with provision of locational spigot, ensures direct mounting of actuators and gear boxes without any radial loading of shafts.
5. Both Drive end and non drive end shafts are fully blowout proof and guided by self lubricated bush bearings.
6. Axial thrust bearing provided on valve, ensures precise positioning of the disc and prevents unequal loading of the valve seat. It also enables installation of valve in any orientation if required.
7. Special shaft sealing arrangement ensure zero fugitive emission and enables field replacement of shaft sealing elements.
8. The seat (sealing dement) provided on the disc is fully field replaceable and ensures optimum seating / unseating torque.
9. A choice of seat materials makes the valve suitable for gas or liquid service with a host of applications.