A triple offset valve is a type of butterfly valve that provides high-quality, zero-leakage performance for critical process applications. It’s a great choice for power plants and petroleum refineries as well as chemical industries that deal with harmful chemicals. It’s a fire-safe, corrosion-resistant valve that can withstand high temperatures without leaking. Its construction lacks elastomers and other soft materials that can deteriorate over time, making it a durable choice for harsh environments.
Triple-Offset Geometry Design
Triple-offset valves have three different features that help them provide consistent and long-lasting sealing. The first two offsets are between the shaft center and the seat/disc sealing surfaces, resulting in minimal friction as the valve opens and closes. The third offset is in the geometry design, which results in a right-angled cone axis that eliminates friction completely. This results in a longer valve life and higher operational efficiency.
Demystifying Triple Offset Valves: A Comprehensive Guide for Engineers
The Triple offset valve Design also helps the valve maintain a metal-to-metal seal in ANSI Class VI shut-off, even in uni-directional flows. The hard-facing seat and the seal ring create a zero-leakage metal-to-metal seal to ensure a bi-directional tight shutoff that is perfect for critical process environments. This type of valve also provides a longer service life than other types of butterfly valves.
The benefits of the Triple-Offset Valve include reduced operating torque, increased stroking capabilities for improved flow characteristics, a field-replaceable seat and seal to extend life and a non-galling design to resist corrosive media. In addition, the Triple-Offset Butterfly Valves are inherently fire-safe and can withstand the highest levels of temperature and pressure without leaking.
