VEVOR 183 L/min(3CFM) 246W(1/3HP) Vacuum Pump Vacuum Pump 117 L/min(1.8CFM) 1 Stage Refrigeration Vacuum Pump Vacuum Chamber 1440RPM for the vacuum pumping with R12, R22, or R134a as a cold-producing medium

1 Stage Vacuum Pump with 1/4HP Motor and 1440RPM

This is a 1 stage vacuum pump powered by a 1/4HP motor at 1440RPM with a displacement of 2.5-3 CFM (71-85 L/min) and an ultimate vacuum of 5 Pa. The combination provides sufficient pulling power to effectively evacuate moisture and air from residential AC systems, automotive units, and other refrigeration equipment before charging with refrigerants such as R12, R22, or R134a.

The heavy-duty aluminum alloy housing keeps the unit durable without adding excessive weight. The powerful copper motor provides steady, continuous power through longer evacuation cycles. The base of the pump is shock-proof, keeping it stable during operation and reducing the risk of vibration affecting performance or causing the unit to shift out of position during a job, particularly on harder or uneven work surfaces.

Backflow Prevention with 1/4" Oil Fill Port for Clean Refills

This 1 stage vacuum pump has backflow prevention to prevent oil from flowing back into the chamber, where it can contaminate the system and attached tubing. That's a significant detail for maintaining a clean system, as oil contamination can ruin the accuracy of a vacuum job and create additional cleanup work later, eating into time better spent on the next task.

Adding oil is easy, no matter the pump's position during a job, because the 1/4-inch oil fill port can be reached from the front or either side of the pump. The oil drain hole allows for quick draining during maintenance. The gas exhaust port is designed to prevent oil spillage, keeping the area around the pump cleaner during operation and reducing mess during routine servicing.

Oil Viewing Window for Monitoring 220 ml Oil Capacity

An integrated oil viewing window lets you see oil levels at a glance, helping you catch low oil levels before they become a bigger problem. Running a vacuum pump without enough oil can affect the pump’s performance and its long-term health. So, a simple visual check is more important than you might first think, especially if you’re doing back-to-back jobs and don’t have time for a detailed inspection.

This monitoring feature removes the guesswork from oil maintenance; rather than relying on how long it’s been since the last fill, you can check the current level anytime you want. That visibility helps keep the unit in optimal working condition over time and reduces the risk of unexpected downtime caused by a low-oil issue going unnoticed. For someone running this 1-stage vacuum pump regularly across multiple jobs, that’s a big deal.

5PA Ultimate Vacuum with Thermal Protection for Reliable Runtime

The pump is equipped with thermal protection that automatically shuts it down if it overheats. This helps prevent burnout and extend the motor's working life. It is also designed to cool itself while operating. This reduces the risk of overheating during longer evacuation cycles, in which the pump must run continuously without a break.

That combination of self-cooling and thermal protection is important for a tool that often must run continuously for extended periods, especially on larger systems that take longer to evacuate fully. The pump is designed to regulate its own temperature and shut down safely if conditions require it rather than risk damage from extended use, protecting the motor from the kind of wear that shortens a tool’s working life.

Ergonomic Grip Handle for Comfortable, Portable Use

Ergonomically designed grip handle for easy transport between job sites or around the workspace. For technicians who move this 1-stage vacuum pump often, a really comfortable handle makes a noticeable difference over a full day of repeated use, especially when the pump is being carried up stairs or across larger properties.

That portability is important whether you’re working out of one shop or bouncing between multiple service calls in a day. An awkward-to-carry pump makes every job more difficult. This handle is well-designed to make transport easy and reduce strain when handling the pump repeatedly, which adds up over the course of a busy workweek.

2.5–3 CFM 1 Stage Vacuum Pump for HVAC, Auto, and Refrigeration

This 1 stage vacuum pump is designed for a variety of commercial and household applications, including servicing household air conditioners, automotive maintenance, vacuum packaging, and refrigerator vacuum work. That versatility makes it a useful tool for HVAC technicians, auto shops, or anyone who handles varied refrigeration tasks regularly without needing a different pump for each job.

From servicing a home AC and preparing an automotive system before a refrigerant recharge to working with larger industrial refrigeration equipment, this pump will handle a wide range of jobs, reducing the need for separate specialized tools. This flexibility is a huge advantage for technicians who handle a variety of service calls in a week, and the one dependable pump in stock saves money and storage space compared to multiple single-purpose pumps.