Butterfly Valves Triple Offset
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butterfly valves triple offset

Butterfly valves triple offset, also known as cam-action or angular butterfly valves are used for applications requiring a tight bubble shut off and have a pressure rating greater than ANSI class 150. They can handle higher temperature and pressure levels than the zero-offset butterfly valves and are more resilient to seat and disc wear. They have a much lower running torque than other types of valves, especially in a closed position.More info:shiphamvalves.com

The third and final offset is a geometric design of the sealing components, which results in a right-angled conical shape. This cam action eliminates all rubbing between the valve seat and seal ring during operation, significantly reducing wear of the seating surfaces and increasing the overall life of the valve. It also allows for a full closure of the disc seat with no over-travel due to the 90-degree angle that serves as a mechanical stop.

Engineering Excellence: The Science Behind Triple Offset Butterfly Valve Innovation

Compared to the conventional butterfly valve, the three-offset design allows for smooth stroking that is free of rubbing during opening and closing, which reduces actuator energy consumption by up to 40%. This translates to lower costs and reduced maintenance requirements over the lifetime of the valve.

The unique geometry of the triple-offset butterfly valve’s sealing surfaces provides a metal-to-metal seal. This ensures a zero-leakage performance that is unaffected by high temperatures, higher pressures, and harsher media conditions. The seat and body seal are often made of a corrosion-resistant alloy like Stellite grade 21 or duplex steel to resist fluid abrasion, erosion, and other forms of wear.