OMT 3.5 CFM AC Vacuum Pump and Gauge Set for R134a R12

The OrionMotorTech AC Vacuum Pump and Gauge Set provides the core equipment needed to evacuate and check automotive and indoor air conditioning systems. Built around a 1/4 hp all-copper motor, it serves technicians and DIY mechanics who need a self-contained kit for air conditioning repair and maintenance.

Performance centers on the pump's 3.5 CFM flow rate, housed in a corrosion-resistant aluminum alloy casing. A built-in cooling fan manages operating heat, while brass-fitted tethered safety caps prevent oil spills during handling. Users can easily monitor oil levels through the integrated sight glass and drain old lubricant quickly using the bottom-mounted valve. The package includes 0.26 quarts of vacuum oil to get started right away.

Diagnostics and charging are handled by a 3-way manifold gauge paired with three color-coded hoses. Built with four-layer construction, these hoses manage working pressures up to 600 psi and burst pressures up to 3000 psi. The kit supports multiple common refrigerants, including R134a, R12, R22, and R502, and includes both self-sealing and puncture-style R134a can taps along with quick couplers.

While the set includes adapters for popular refrigerants, working on different systems requires switching between the included taps and fittings. The 1/4 hp motor is sized for standard servicing needs, so larger commercial jobs may require more time to evacuate fully. Additionally, regular oil level checks and drain maintenance are necessary to keep the pump operating properly.

Verdict: This OrionMotorTech kit is a solid, comprehensive choice for anyone servicing auto or indoor AC units using R134a, R12, R22, or R502 systems. It delivers all necessary hoses, gauges, taps, and initial oil in a single organized carrying case and bag.

• Motor Power: 1/4 hp
• Motor Type: All-copper
• Flow Rate: 3.5 CFM
• Casing Material: Aluminum alloy
• Hose Working Pressure: Up to 600 psi
• Hose Burst Pressure: 3000 psi
• Hose Construction: 4 layers
• Included Oil Volume: 0.26 qt.
• Refrigerant Compatibility: R134a, R12, R22, R502

A great fit if you:

• Service vehicle or home AC systems using R134a, R12, R22, or R502 refrigerants
• Want a complete kit that includes the pump, gauges, hoses, can taps, and oil together
• Need an organized setup with a protective carrying case and bag for transport

Consider something else if you:

• Require a higher-horsepower pump for rapid evacuation on large commercial systems
• Work exclusively with refrigerants outside the four supported types listed

What refrigerants work with this gauge and pump set?
The kit is compatible with R134a, R12, R22, and R502 refrigerants for both automotive and indoor HVAC systems.

Does the kit come with vacuum pump oil?
Yes, it includes 0.26 quarts of vacuum oil in the box.

What type of R134a can taps are included?
The set includes both self-sealing and puncture-style R134a can taps, along with R134a quick couplers.

What are the pressure ratings on the hoses?
The four-layer color-coded hoses handle working pressures up to 600 psi and have a burst pressure rating of 3000 psi.