20" High Performance Butterfly Valve Closed in Under 1/2 Second!

Fast closing Kinetrol actuator

This video demonstrates how quickly a large butterfly valve can be closed with a Kinetrol vane actuator spring return unit. In this case, it's a 20" stainless steel high performance butterfly valve (HPBV) being tested in the shop.

You'll note the valve takes about 11 seconds to open, but only 0.4 seconds to close, using the Kinetrol spring return unit.

Quick closing valves are used in emergency situations to stop the flow of fluids that may contribute to uncontrolled combustion, cause backstream contamination, or allow spillage of hazardous materials.