OMT AC Vacuum Pump and Gauge Set, 5 CFM 2 Stage, R1234yf

The OrionMotorTech AC Vacuum Pump and Gauge Set gives technicians and DIY mechanics a complete setup for servicing automotive air conditioning systems. It pairs a 1/2 hp vacuum pump with a 4-way manifold gauge and connection hardware, helping you evacuate lines, check pressures, and recharge systems without buying pieces separately.

Performance centers around a 3450 rpm motor delivering a 5 CFM flow rate. It pulls systems down to 1.5 microns (0.2 Pa) for thorough moisture and air removal during maintenance. An ignition-proof switch provides sparkless operation, making it suitable for systems utilizing mildly flammable A2L refrigerants like R1234yf. The kit also includes a special cap on the combined oil fill and exhaust port to minimize oil mist while running at or below 70 dB.

For system diagnostics, the set provides a 4-way manifold gauge with clear dial markings and calibration adjustment for accurate pressure readings. To handle standard vehicle connections, the package includes four hoses, vacuum oil, R134a quick couplers, R134a to R1234yf adapters, and self-sealing can taps for both refrigerant types.

As for limitations, the included fittings specifically target R134a and R1234yf automotive setups, so servicing other equipment may require separate hardware. The listing also does not mention specific hose lengths or the exact oil reservoir volume.

Verdict: This kit is a great match for auto mechanics and DIYers who need a reliable, spark-free evacuation setup with full gauge diagnostics for both R134a and R1234yf vehicle AC systems.

• Motor Power: 1/2 hp
• Motor Speed: 3450 rpm
• Flow Rate: 5 CFM
• Ultimate Vacuum: 1.5 microns (0.2 Pa)
• Noise Level: At or below 70 dB
• Refrigerant Compatibility: R134a and R1234yf (A2L compatible)
• Gauge Type: 4-way manifold gauge

A great fit if you:

• Need to evacuate and recharge modern auto AC systems using R1234yf or R134a
• Require a spark-free pump designed for mildly flammable A2L refrigerants
• Want a complete kit that includes gauges, hoses, adapters, and pump oil
• Prefer a quieter workspace with noise levels kept at or below 70 dB

Consider something else if you:

• Need a setup equipped for non-automotive or commercial HVAC fittings out of the box
• Prefer buying individual tools rather than an all-in-one manifold and pump bundle

Is this vacuum pump safe for R1234yf refrigerant?
Yes. It features an ignition-proof ON/OFF switch for sparkless operation when working with A2L and mildly flammable refrigerants.

What vacuum level can this pump achieve?
The pump is rated to pull down systems to 1.5 microns (0.2 Pa) with a 5 CFM flow rate from its 3450 rpm motor.

What accessories come in the package?
The kit includes a 1/2 hp vacuum pump, a 4-way manifold gauge, 4 hoses, vacuum oil, R134a quick couplers, R134a to R1234yf adapters, and self-sealing can taps for both R134a and R1234yf.

How loud is the vacuum pump during operation?
The pump operates at or below 70 dB and includes an oil mist-free cap on the combined exhaust/fill port.