253B Exhaust Throttle Valve
The MKS 253 Exhaust Throttle Valve regulates the removal of gas from a processing system. Its flapper is positioned to modulate gas flow, thereby controlling process pressure. The 253 has a patented non-linear actuator placed between the flapper shaft and the motor drive shaft in order to generate a linear valve transfer characteristic and provide smooth linear pressure control. The Type 253 is available in standard sizes and flange styles, and is compatible with all MKS throttle valve controllers. For additional flange styles and sizes, valve body heater, and fast motor options, contact MKS Applications Engineering.