The 253B 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.
Additional drawings are not available for this product.
Specifications
Type
Exhaust Throttle Valve
Valve Drive
Mechanical (non belt) drive with integral cosine generator
Valve Speed
7.5 s
Resolution
1/10,000
Helium Leak Rate
1 x 10-8 scc/sec
Operating Temperature Range
Valve Body: 0 - 90°C Valve Motor:0 - 70°C
Maximum Differential Pressure Across Valve
1 Atmosphere
253b-downstream-exhaust-throttle-valves
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