Direct drive, rotary lobe / impeller, hydrocarbon fluid, CFM 400:
Ultimate pressure 1 millitorr
Inlet / Exhaust connection 4" ASA
Integral Bypass Valve Eliminates Need for Pressure Switch
Dynamically Balanced Impellers
Motor 2 HP 230/460V
Oil capacity 0.5 gallon
Net Weight 250 lbs
Please Note: The Stokes 310 vacuum booster pump was discountined in 2005. No direct replacement was ever produced by Edwards Stokes Vacuum. The vacuum booster pump shown is a direct drop-in replacement, with the exact same specifications.