4 CFM Vacuum Pump 110-115V/220-250V (selectable) 50/60 Hz

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Robinair vacuum pump features below. See Specifications tab for voltage, micron rating, recommended uses, dimensions and more.

Iso-Valve™: Isolates the pump from the system with just a quarter-turn
Gas ballast: Allows moist air to pass through the pump to mix with dry air, reducing condensation
Heavy-duty motor: Sealed bearing, high-torque design for easy startup and efficient operation
2-stage rotary vane design: Powerful, quiet high vacuum capability for maximum moisture removal and reduced evacuation time
Offset rotary vanes: Unique design builds more compression, reducing system pressure and removing more moisture
Molded polycarbonate base: Reduces vibration and provides balance during operation
Angled oil drain valve: Faster, more complete draining
Top oil fill port: Better access when refilling oil
Cast aluminum body: Lightweight and durable die-cast aluminum reduces weight and creates a strong, durable pump
Quality: Performance-tested to meet Robinair’s quality, durability and longevity standards
Intake screen: Prevents foreign matter from entering pumping chamber. External exhaust filter separates oil vapor from exhaust flow
Brass intakes: Reliable brass intake valves with Flare, ACME or both style fittings with tethered caps
“No Hassle” warranty: Exclusive over-the-counter replacement warranty. Robinair pumps can be returned to a distributor for an immediate exchange. U.S. and Canada only. In other locations, see your Robinair distributor
Multi-use: Designed for use on A/C-R systems using CFCs, HCFCs, and HFCs in conjunction with mineral oil, ester oil, alkyl benzene oil, and PAG oil as lubricants
Not for use with ammonia or lithium bromide systems
Not for use with A4L or other flammable refrigerants