HFS(R) 2 Stage Rotary Vein Vacuum Pump - 12 CFM, 1HP, 110V,

The HFS 2 Stage Rotary Vane Vacuum Pump is built for technicians and fabricators who require rapid air evacuation and deep vacuum levels. Driven by a 1-horsepower motor running on 110V power, this unit delivers a 12 CFM (340 L/min) flow rate and reaches an ultimate vacuum of 15 microns (2x10-1 Pa). It serves demanding tasks across refrigeration repair, vacuum packing, printing machinery, medical appliances, gas analysis, and hot-forming plastics.

Clean operation is a major focus of the physical design. The gas intake is engineered to stop oil from flowing back into your lines or workpieces, protecting connected hoses and vessels from contamination. At the other end, the exhaust port incorporates dedicated separating devices that prevent oil from spraying out during heavy venting cycles. An oil reservoir holds up to 630ml of fluid to keep the internal vanes running smoothly.

For durability and operational comfort, the motor is housed in an alloy aluminum casing that dissipates heat effectively and supports easy starting in cold ambient conditions. An elastomeric coupling insert sits directly between the motor and pump module, dampening mechanical vibrations to ensure low-vibration, quiet performance while operating.

There are specific operational boundaries to keep in mind. The pump is designed for ambient operating temperatures between 5 and 40 degrees Celsius (41 to 104 degrees Fahrenheit). It features built-in thermal protection, meaning the motor may automatically shut off if the room gets too hot or if input voltage spikes. Additionally, weighing in at 16 kilograms (over 35 pounds), it requires a sturdy workspace and dedicated lifting effort.

Verdict: The HFS 12 CFM 2-stage pump is a capable choice for professionals needing fast evacuation down to deep micron levels without oil backflow mess. It is well suited for refrigeration servicing, plastic molding, and industrial packing where steady 110V power is available.

• Flow Rate: 12 CFM (340 L/min)
• Power: 1 HP
• Voltage / Frequency: 110V / 60Hz
• Vacuum Stages: 2 Stage
• Ultimate Vacuum: 2x10-1 Pa (15 Microns)
• Inlet Ports: 1/4 inch and 3/8 inch SAE connect
• Oil Capacity: 630ml
• Operating Temperature Range: 5C to 40C
• Dimensions: 15.3 x 5.7 x 10.0 inches (390 x 145 x 252 mm)
• Weight: 16 kgs
• Casing Material: Alloy aluminum

A great fit if you:

• Service refrigeration systems that require deep vacuum drawdowns to 15 microns.
• Work with vacuum packaging, gas analysis, printing machinery, or plastic thermoforming.
• Need flexible connectivity with standard 1/4-inch and 3/8-inch SAE fittings.
• Want clean operation without oil back-siphoning into hoses or oil spraying from the exhaust.

Consider something else if you:

• Need a lightweight, highly portable vacuum pump for quick, mobile service calls.
• Must operate in unconditioned environments exceeding 40 degrees Celsius.

What inlet connections are included on this pump?
The pump features both 1/4-inch SAE and 3/8-inch SAE connection ports on the inlet.

How much vacuum oil does the pump hold?
The oil capacity for this unit is 630ml.

Why would the pump automatically stop running?
The pump includes thermal protection that may shut the motor down if the ambient temperature is too high (above 40 degrees Celsius) or if the incoming electrical voltage is too high.

What applications is this vacuum pump suitable for?
It is designed for refrigeration repair, medical appliances, printing machinery, vacuum packing, gas analysis, and hot-forming plastics.