Triple Offset Butterfly Valves

Triple Offset Butterfly Valves model

Triple offset butterfly valve body includes a laminated metal seat ring, composed of alternating layers of corrosion-resistant alloy and composite graphite.

Each individual lamination provides an independent seal, unaffected by damage to the others. While improving the long-term sealing properties, the resilience of this laminated design also allows lower operating torques. And solid metal seat ring is in supply scope.

The conical sealing design of triple offset butterfly valve ensures that the metal sealing components are never in contact until the final degree of closure, resulting in repeatable sealing and a vastly extended valve life. In other valves, the steady effects of deformation and friction substantially decrease the life expectancy after the first operation. In contrast, triple offset design can provide reliable valve performance for a longer period.

Triple offset butterfly valves are designed to offer optimal sealing over the total product range. This is achieved by employing a laminated seal in the body. Metal-to-metal sealing allows for higher pressure and temperature applications, while still providing bubble-tight shut off. No cavities exist between the sealing components, in contrast to some conventional concentric and double offset valves. Thus, the ingress of particles is eliminated. The need for minimum maintenance due to the robust design, with the added advantage of a field replaceable seat and seal components, reduces the cost.