Double Eccentric Butterfly Valve

Double eccentric butterfly valves offer several benefits, including:1. Leak-free DesignBecause the double eccentric butterfly valve features a double offset design, the disc and seat do not touch when the valve is in the open position. This eliminates the risk of creating a seatset, or leak path, which is the number one complaint with butterfly valves.2. Exercise Program NOT RequiredProperly designed and manufactured double eccentric butterfly valves, utilize bronze bushings and O-ring seals to prevent water from entering the valve shaft area. This design eliminates the corrosion caused by plastic sleeves and packing glands. Since there is no need to break up corrosion and rust caused by a poor design, you can leave the valves in the open position until you need to close them.3. VersatilityDouble eccentric butterfly valves are known for their versatility. They are an excellent choice when critical service valves are needed. In other words, if you need a valve that will isolate the media and not leak these are the valves for the application. They can be used for pump control, air valve isolation, reservoir intake isolation, transmission lines, PRV isolation, and general isolation around the plant or in the distribution system. They are designed for use in clean water, industrial, and gas applications.4. Low maintenanceDouble eccentric butterfly valves are known for their low maintenance requirements. These valves are designed to last and are easy to repair if needed, reducing the overall cost of ownership.

What is the difference between double eccentric butterfly valve and triple eccentric butterfly valve, zero eccentric butterfly valve?Double eccentric butterfly valves can be used at higher pressures than zero eccentric butterfly valves. Double offset is available in carbon steel, stainless steel, Hastelloy, and other valve body materials to ANSI Class 600 ratings, with a variety of Teflon seats and fire resistant designs with metal support seats.  

Triple eccentric valves are used in industries similar to double eccentric butterfly valves, but for more demanding applications. If you have any additional questions, please feel free to contact us! Our valve team has years of experience and would be happy to help you!