Butterfly Valves have the advantages of having a small footprint, being turned completely off to on in one 90 degree rotation of the handle, while offering a high gas throughput and conductance. These vacuum butterfly valves are designed to have a low leak rate, typically on the order of 1x10-9 std. cc/sec. Helium. These butterfly valves have a NW-25 vacuum flange for connection to the vacuum system, are manually operated, and made of stainless steel.
Flange Type ISO NW25, KF25
Requires KF25 O-ring and Hinge Clamp for connection, not included.