The three-piece design of Triple Offset Valve Features enables them to be used in applications with corrosive materials and high temperatures. They can also handle high-viscosity fluids and are well-suited for use in industrial processes that require precision and accurate flow control. These characteristics make them suitable for a variety of industries and applications, from water treatment and wastewater to chemical and petrochemical and power generation.
Unlike concentric or double-offset butterfly valves, triple-offset designs feature an absence of cavities between sealing components that could clog or degrade over time. This type of geometry minimizes squeezing complications between the disc and seat, thus reducing wear.
In addition, the precision seat and seal are machined at an offset angle to create even seating around the entire ring. This eliminates rubbing between the seat and seal during opening and throttling, providing repeatable long-lasting zero leakage shutoff.
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The Cam-action and right-angled conical seat design also ensures that the metal seats never come into contact until the final degree of closure — this prevents premature wear and significantly extends the valve’s operating life. This cam-action and right-angled design also reduces friction, noise and vibrations in the operation of the valve, as well as minimizing process air consumption.
Zwick’s top-quality triple eccentric butterfly valves are utilized globally for Oil and Gas, Chemical and Petrochemical and power operations. They are also fire-safe, API and British Standard certified. In addition, they are offered in a wide range of sizes and pressure ratings.