
OrionMotorTech
OMT 3.5 CFM Single Stage Vacuum Pump for R134a R410a R22 Auto
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Highlights
- Pump It Out: Orion Motor Tech's single stage vacuum pump, powered by a 1/4 hp all-copper motor, ensures swift HVAC servicing. With a 3.5 cfm flow rate, it can draw systems down to 37.5 microns (5 Pa) for quick and easy servicing of AC systems employing R12, R22, R134a, R410a, and R502 refrigerants
- Safe & Stable Operation: Built with a reinforced aluminum alloy casing, this auto AC vacuum pump efficiently disperses heat and resists corrosion for durability. Its intake filter and trap effectively shield against impurities and oil mist to maintain optimal performance
- User-Friendly Designs: The oil reservoir of this AC vacuum pump includes a convenient sight glass and scale for oil level monitoring and timely refills. Its nonslip handle keeps everything easily portable for transport or storage between jobs
- Wide Application: Compatible with 1/4", 1/2", and 3/8" hoses, this HVAC vacuum pump is well-suited for a range of applications, from automotive HVAC servicing projects to vacuum packaging, wine degassing, thermoforming, and more
- Service-Ready Pump Package: This automotive AC vacuum pump kit provides everything needed for efficient maintenance, including the necessary lubricating and absorptive oil, a pair of one-size-fits-most gloves for effortless oil refill, and Teflon tape for ensuring secure sealing of threaded connections
Why You'll Love It
- Draws systems down to 37.5 microns using a 1/4 hp all-copper motor
- Works across R12, R22, R134a, R410a, and R502 refrigerant systems
- Reinforced aluminum alloy casing resists corrosion and disperses heat efficiently
- Clear sight glass and scale allow quick monitoring of oil levels
- Connects easily to 1/4-inch, 1/2-inch, and 3/8-inch service hoses
- Includes initial lubricating oil, gloves, and sealing tape in the box
Pros
- +All-copper 1/4 hp motor
- +Reaches 37.5 microns vacuum level
- +Built-in oil sight glass with scale
- +Includes pump oil and accessories
- +Fits three common hose sizes
Cons
- -Single-stage design limits deeper vacuum needs
- -Hoses not included in the package
Detailed Review
The OrionMotorTech 3.5 CFM Single Stage Vacuum Pump is designed for automotive air conditioning service and general evacuation tasks. Powered by a 1/4 hp all-copper motor, it delivers a flow rate of 3.5 cfm and can pull systems down to 37.5 microns (5 Pa). This level of vacuum makes it suitable for servicing systems that run on R12, R22, R134a, R410a, and R502 refrigerants.
Durability is supported by a reinforced aluminum alloy casing that disperses operational heat while resisting corrosion. Inside the intake path, a built-in filter and trap protect the mechanism by blocking impurities and capturing oil mist. For maintenance, the oil reservoir features a built-in scale and clear sight glass, helping you verify fluid levels at a glance before or during a job.
Portability and versatility are key aspects of the design. A nonslip handle makes moving the unit between the garage, workshop, or jobsite straightforward. The intake connects to standard 1/4-inch, 1/2-inch, and 3/8-inch hoses, allowing you to use it beyond vehicle AC systems for non-automotive tasks like vacuum packaging, degassing wine, or thermoforming.
As a single-stage pump, it is built for standard evacuation tasks rather than applications requiring multi-stage pull-down. The package includes lubricating oil, gloves, and Teflon tape, though users will need to supply their own compatible hoses and manifold gauges.
Verdict: This pump is a practical, service-ready option for DIYers and technicians working on standard automotive AC systems or hobby projects. Its included starter accessories and broad refrigerant compatibility provide solid value right out of the box.
Specifications
- Flow Rate: 3.5 cfm
- Motor Power: 1/4 hp (all-copper)
- Ultimate Vacuum: 37.5 microns (5 Pa)
- Housing Material: Reinforced aluminum alloy
- Hose Compatibility: 1/4 inch, 1/2 inch, 3/8 inch
- Refrigerant Compatibility: R12, R22, R134a, R410a, R502
Who Should Buy It
A great fit if you:
- Need to evacuate auto AC systems running R134a, R410a, R22, R12, or R502.
- Want a pump that connects to 1/4-inch, 3/8-inch, or 1/2-inch hoses.
- Engage in workshop projects like wine degassing, thermoforming, or vacuum packaging.
- Prefer a kit that comes supplied with starter oil, gloves, and Teflon tape.
Consider something else if you:
- Require a dual-stage pump for industrial deep-vacuum applications.
- Need a complete set that already includes manifold gauges and hoses.
FAQ
What refrigerants is this vacuum pump compatible with?
It is designed to service air conditioning systems running R12, R22, R134a, R410a, and R502 refrigerants.
What size hose connections does it support?
The pump is compatible with 1/4-inch, 1/2-inch, and 3/8-inch hoses.
What items come in the package?
The package includes the single-stage vacuum pump, the required lubricating and absorptive oil, a pair of one-size-fits-most gloves, and Teflon tape.
Can this pump be used for tasks other than vehicle AC repair?
Yes, it is also suitable for vacuum packaging, wine degassing, and thermoforming projects.
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Product Specs
| Specification | Details |
|---|---|
| Manufacturer | Orion Motor Tech |
| Brand | Orion Motor Tech |
| Model | Vacuum Pump |
| Item Weight | 10.78 pounds |
| Product Dimensions | 10.8 x 4.3 x 8.5 inches |
| Item model number | MPN1VPHAN01-LB |
| Manufacturer Part Number | VPH-AN01-LB |
| Voltage | 115 volts |
| ASIN | B0CSGDHQML |
| Customer Reviews | 4.5 4.5 out of 5 stars (461) 4.5 out of 5 stars |
| Best Sellers Rank | #2,935 in Automotive (See Top 100 in Automotive) #3 in Air Conditioning Vacuum Pumps |
| Date First Available | January 16, 2024 |






