Butterfly valves

Neles™ butterfly valves are designed to truly optimize the efficiency of process operations by offering best-in-class valve capacity. They provide long-lasting tightness and industry-leading valve reliability, certified to SIL 3. Our product range includes both metal and soft-seated and rubber-lined butterfly valves.

Butterfly valves for all applications

A butterfly valve is a rotary valve using a disc as the closure member. Butterfly valves can be either symmetric or eccentric (=offset), the latter referring to the stem being displaced from the center of the disc. Neles and Jamesbury butterfly valve offering covers concentric, double eccentric and triple eccentric designs. Thus, Jamesbury and Neles butterfly valves are a superb choice for most applications.

Neles and Jamesbury butterfly valves are available with wafer (no flanges), lugged (single flange) and double-flanged body types. This along with comparably short face-to-face dimension makes them versatile and cost-efficient solutions for a variety of on/off and control applications. Extreme tightness performance makes the butterfly valves optimal for tight shut-off on/off applications and their inherent modified equal percentage flow characteristic makes them an excellent solution for a control valve.

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Next generation versatile butterfly valves

The new generation of Neldisc™ metal-seated and Wafer-Sphere™ soft-seated butterfly valves is built to deliver sustainable performance today and tomorrow. Our versatile product range includes both metal-seated butterfly valves and soft-seated butterfly valves.

Neles™ butterfly valves

Neles metal-seated butterfly valves are designed to truly optimize the efficiency of process operations by offering best-in-class valve capacity. They provide long-lasting tightness and industry-leading valve reliability, certified to SIL 3.

Jamesbury™ butterfly valves

The combination of a unique off-center disc, proprietary seat design, Xtreme™ sealing technology, and other features make our Wafer-Sphere™ high-performance butterfly valve a tight-sealing, long-lasting, yet lighter and lower-cost alternative to gate valves and other heavier rotary-type designs.

EasyFlow by Neles™ butterfly valves

Easyflow by Neles JA series concentric disc resilient seated butterfly valves are suitable for a wide range of applications in manual or automated on/off through throttling control services. Although compact and lightweight, the JA series is designed to be rugged, reliable, and to comply with a variety of global industry standards.

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The best of both worlds - 45 years of butterfly valve expertise

Bringing together 45 years of butterfly valve expertise from two sides of the Atlantic Ocean

Butterfly valve installed, problem solved - Reducing Dow’s operational costs under extreme process conditions

The Dow Chemical Company has been operating in Stade, Germany for more than 40 years. Nearly three million tons of basic and specialty chemicals are manufactured per year in this ultramodern integrated plant complex, placing high availability and safety demands on all components. That’s why Dow has installed a custom-designed butterfly valve, developed by Neles, to reliably shut off the DME reactor in Stade.

How to improve turbine efficiency

In the power and gas turbine market, competition among turbine and compressor manufacturers has become more challenging. Decisions are driven mainly by price and efficiency. Saving costs by selecting the correct application-based control and safety valves has become more important. New valve technologies and new valve designs help increase turbine efficiency and reduce costs while improving safety, for example, by installing a faster pressure relief in the case of a trip in a compressor or a gas turbine compressor.