WHAT ARE THE CHARACTERISTICS OF HIGH PERFORMANCE BUTTERFLY VALVES AND TRIPLE OFFSET BUTTERFLY VALVES ?
What Are the Characteristics of High Performance Butterfly Valves and Triple Offset Butterfly Valves?* Continuing to expound on the previous post on Resillient Seated Butterfly Valves ,this post will focus on the characteristics of Double Offset , also called High Performance Butterfly Valves, and Triple Offset Butterfly Valves . WHAT IS A HIGH PERFORMANCE OR DOUBLE OFFSET BUTTERFLY VALVE? High Performance Butterfly Valves use a disc offset from the seat center, hence the name Double Offset. In this configuration, the disc is eccentric, or offset, from the valve seat. As the disc starts to rotate, it moves away from the seat instead of across it. This design actually uses the line pressure to help give it its seal. This feature allows the use of offset butterfly valves in high‐pressure applications such as ethanol or HVAC. It generally uses PTFE or plastic as its seat material, but metal seats are also available to meet...