MKS 253B Pneumatic Exhaust Throttle Valve, CF 2.75 Flange, 316L Stainless Steel, DB 15 Connection
The MKS 253B Exhaust Throttle Valve is designed to preciecely regulate the removal of gas from a processing system. The 253B is specially deisgned with a non-linear actuator placed between the butterfly shaft and the motor drive shaft, which generates a linear valve transfer characteristic. This means that the controller used to power the valve will need much less gain and phase lead adjustment between the fully open and fully closed positions. The 253B has a valve speed of 1.7 seconds (open to close), a viton O-ring and is compatible with the following MKS controllers: 651, 652, 152G, and 252.