Their compact and lightweight design, availability in larger sizes, and easy usability make Neles butterfly valves an attractive option for many industrial processes. Their versatility makes them suitable for a wide range of temperatures, pressures, industries, and applications. They can be used in either control, on-off, or emergency shutdown service.
Maintaining excellent long-lasting tightness over the valves’ entire service life is one key requirement for valves in on-off and emergency shutdown service. Safety is a high priority for Neles butterfly valves such as the new Neldisc™, which offers true metal-to-metal sealing with virtually zero leakage. The butterfly valves are SIL 3 capable of reliable performance in ESD service.
When it comes to using butterfly valves in control valve service, Neles now offers customers two different shaft options – Driveshaft with trunnion providing high flow rates and a robust through-shaft option for both Neldisc™ (triple offset) metal-seated valves and Wafer-Sphere™ (double offset) soft-seated valves. This is a particularly useful feature for control valves, especially in cases where higher Cv is required for a particular size.
The vast majority of valves and valve applications in any industrial process could be classed as standard. Yet in all process units, there are some valve applications that are considered challenging. For example, when valves need to handle oxygen, high cycling, dirty media, corrosive media, or cryogenic temperatures. Neles butterfly valves have the answers for such challenging and severe service requirements.
The metal-seated Neldisc butterfly valve is suited for high temperatures and can handle dirty media. The true metal-to-metal seal has no graphite, which is known to flake and is unable to withstand higher temperatures
