VEVOR Vacuum Pump 283 L/min(10CFM) 746W(1HP) Vane Vacuum Pump Two Stage 3 x 10⁻¹ Pa Ultimate HVAC Rotary Auto AC Refrigerant Vacuum Pump, for Automobile Reparation Vacuum Evacuation

Aluminum Alloy Two Stage Vacuum Pump with Copper Motor for Heavy-Duty Performance

This two stage vacuum pump features a heavy-duty aluminum alloy frame and is built to withstand the physical demands of continuous commercial and automotive service work. The copper motor is wound for improved conductivity and reliable 1 HP output, with no overheating or performance loss during long operating cycles. The pump is mounted on a shockproof base that holds it firmly to the floor, prevents movement from vibration, and keeps the device stable at maximum speed.

The aluminum alloy provides an optimal balance of structural rigidity and low weight, giving the pump durability without adding unnecessary weight to the task. Motors with copper windings have higher electromagnetic efficiency than aluminum-wound motors, resulting in more consistent torque and longer motor life under continuous load. These material selections demonstrate a design priority for reliable, long-term performance over years of rigorous professional use.

2000 RPM Pump Speed with 10 CFM Free Air Displacement for Fast System Evacuation

The two stage vacuum pump operates at 2000 RPM and has a free air displacement of 10 CFM (254 L/min), which is ideal for HVAC specialists who need to evacuate large systems in a reasonable amount of time. In residential, split, and automobile A/C systems, a higher pump speed results in a shorter total pump-down time without compromising the final vacuum depth. It is also fast enough for vacuum packaging, refrigerator servicing, and other applications where the speed of air removal is important.

The coupling of the motor and rotor to the dual-stage vane mechanism is used to reach the 2000 RPM working speed while balancing throughput and mechanical stability. At full speed, the vane assembly moves enough gas volume to bring the system down quickly before it enters the deep-vacuum phase. This two-phase action that makes high-speed two-stage designs so much more efficient than slower, single-stage pumps for professional use.

0.3 Pa Ultimate Vacuum via Dual-Stage Compression for Deep HVAC Evacuation

This pump achieves a depth of evacuation that is unattainable with single-stage devices. It has a rated ultimate vacuum of 310-1 Pa, or 25 microns. The dual-stage compressor compresses the gas in two steps: first to an intermediate pressure level, then to the near-ideal vacuum conditions of the second stage. It is this depth that is critical for removing moisture before introducing refrigerant. This directly affects the long-term reliability of the system.

Reaching 25 microns ensures that water vapor and dissolved gases are fully evacuated before the system is sealed and charged with refrigerant. Over time, residual moisture can react with refrigerant to generate acids that erode copper tubing and deteriorate compressor oil. The two stage vacuum pump pulls down to 0.3 Pa, ensuring technicians know the system is truly clean and ready for a safe refrigerant recharge.

Backflow Prevention with Front-Accessible 1/4" Oil Fill Port and Dedicated Exhaust

The chamber is protected from oil pollution by an integral backflow-prevention system when the pump is off. This protects the connected equipment and the pump's oil supply. The 1/4” oil fill port is easily accessible from the front or either side of the unit, allowing for quick and convenient oil top-ups without having to reposition the pump. The gas exhaust port was designed for this purpose, venting the gas effectively and physically preventing the oil mist from escaping into the surrounding work area.

Oil contamination in a refrigerant system is a major issue that, if left untreated, can require complete system cleansing and component replacement. Once the pump is turned off, the backflow prevention valve automatically locks, forming a seal that prevents oil from flowing out of the pump circuit. This protection is passive, so technicians don’t have to perform a special shutdown procedure after each service call to keep their systems clean.

Oil Viewing Window and Thermal Protection for Low Maintenance

An external oil viewing glass allows technicians to quickly monitor oil level and clarity at a glance, at any time throughout the workday, without tools or disassembly. Equipped with an internal thermal protection mechanism that monitors the motor temperature and interrupts power prior to critical heat levels being reached, preventing burnout during long pump-down cycles. These passive monitoring capabilities enable the pump to run for extended periods without continual human supervision.

Running at a high speed of 2000 RPM for extended periods generates more internal heat than slower speeds, so thermal protection is critical. The automated cutoff provides the motor time to recover before damage can occur, then allows the pump to continue once temperatures normalize. With these capabilities and the ability to see the oil level, technicians can get through extended service days without having to keep an eye on the pump between jobs.

Two Stage Vacuum Pump with Compatibility Across R12, R22, R134a, R410a, R404, and R502 Systems

This two stage vacuum pump works with R12, R134a, R22, R410a, R404, and R502 to cover practically every type of refrigerant used in home HVAC, commercial refrigeration, and vehicle A/C systems. This multi-refrigerant capability makes it a single, versatile instrument for service organizations that handle a wide variety of equipment, eliminating the need for separate evacuation tools for each refrigerant. Note: This pump is not rated for R32 refrigerant.

The ability to service older refrigerants like R12 and R22, as well as contemporary blends like R410A and R404A, reflects the reality of field service work, where technicians work on systems of all ages. Rather than restricting the pump’s application solely to new installations, this device encompasses the full range of typical refrigerant chemistries in the field. This broad adaptability allows it to remain a relevant and economical instrument as the refrigerant landscape continues to evolve.