# Orion Motor Tech OMT 4 CFM Single-Stage Vacuum Pump, FBA-VPHB001OG

FBA-VPHB001OG: Orion Motor Tech OMT is a 4 CFM single-stage rotary-vane vacuum pump for automotive AC and HVAC servicing. Its listing specifies a 1/3 hp motor, a 30-minute duty cycle and a stated ultimate vacuum of 37.5 microns, with oil and selected accessories described as included.

- [Original product page](https://best-deals.pro/product/orion-motor-tech-omt-4-cfm-single-stage-vacuum-pump)
- [View offer](https://best-deals.pro/visit/orion-motor-tech-omt-4-cfm-single-stage-vacuum-pump)
- Market: US
- Language: en-US
- Currency: USD
- Brand: Orion Motor Tech
- Model: FBA-VPHB001OG
- Price: 66.59 USD
- Previous price: 73.99 USD
- Discount: 10%
- Price checked: 2026-11-13T05:25:21.827Z
- Rating: 4.6 / 5
- Reviews: 318

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- The listing describes a 4 CFM single-stage rotary-vane pump with a 1/3 hp all-copper motor.
- A sight glass and scale are provided for monitoring the oil level.
- The stated hose compatibility covers 1/4", 1/2", and 3/8" hoses, while the technical detail lists 1/4 in. and 1/2 in. inlet ports.
- The pump is described for automotive HVAC, vacuum packaging, wine degassing and thermoforming applications.

## Pros

- Oil is included, and a sight glass with scale makes checking its level more straightforward.
- The listed hose compatibility covers three hose sizes for varied setup needs.
- The compact listed dimensions and nonslip handle may help with moving or storing the pump between jobs.

## Cons

- The stated duty cycle is 30 minutes, which limits uninterrupted operation compared with a continuous-duty specification.

## Specifications

### Identity
- Brand: Orion Motor Tech
- Model: FBA-VPHB001OG
- Pump type: Rotary Vane
- Stages: Single stage
### Performance and operation
- Motor power: 1/3 hp \(248W\)
- Flow rate: 4 cfm \(6.8 m³/h\)
- Ultimate vacuum: 37.5 Microns \(5 Pa\)
- Duty cycle: 30 min.
- Refrigerants named: R12, R22, R134a, R410a, and R502
### Connections and oil
- Inlet ports: 1/4 in. & 1/2 in.
- Hose compatibility: 1/4", 1/2", and 3/8" hoses
- Oil capacity: 0.24 qt. \(225 mL\)
- Oil provided: 0.26 qt. \(250 mL\)
### Dimensions and installation
- Dimensions listed: 10.8 x 4.3 x 8.5 inches
- Weight listed: 10.78 pounds
- Cord length: 4.6 ft
### Construction and features
- Special features: High Flow Rate, All-Copper Motor, Reinforced Casing, Multi-Hose Compatibility
- Casing description: reinforced aluminum alloy casing
- Oil monitoring: sight glass and scale

## Before you buy

- The listing is inconsistent about connections: it describes compatibility with 1/4", 1/2", and 3/8" hoses, but lists only 1/4 in. and 1/2 in. inlet ports. The stated 37.5-micron ultimate vacuum is a manufacturer claim, while customer feedback includes reports of not reaching 500 microns. Confirm the required connections and performance for the intended job.

## A good fit for

- Automotive AC and HVAC users seeking a single-stage pump with a listed 4 CFM flow rate and specified 30-minute duty cycle.
- Buyers who want included oil and oil-level visibility for routine servicing.
- Users considering additional applications such as vacuum packaging, wine degassing or thermoforming, as named in the listing.

## Less suited to

- Users needing a stated continuous-duty operating cycle.
- Buyers who need confirmed performance at a particular vacuum level or a specific hose connection without resolving the listing discrepancies.

## Customer feedback

Customer feedback highlights perceived quality, value and quiet operation, while vacuum performance and build quality are mixed. Some customers reportedly say the pump pulls vacuum effectively, while others report less than 500 microns, and oil leakage is also mentioned. These experiences matter if a job depends on achieving the listed 37.5-micron claim or keeping the work area free of oil, but do not establish the performance of an individual unit.
- Positive themes: Customers reportedly praise quality, value for money and quiet operation.
- Negative themes: Some customers report oil leaking from the bottom.
- Mixed feedback: Vacuum performance is mixed, including reports of effective evacuation and reports of less than 500 microns.
- Mixed feedback: Build quality receives both positive and negative feedback.

## Frequently asked questions

### What flow rate and motor power are listed?
The listing specifies 4 cfm \(6.8 m³/h\) and 1/3 hp \(248W\). These are manufacturer-listed specifications, not independent measurements.
### What ultimate vacuum does the listing claim?
It states 37.5 Microns \(5 Pa\). Customer feedback reports mixed vacuum performance, so buyers with a required target should confirm suitability before purchase.
### Which hose connections are supported?
The listing describes compatibility with 1/4", 1/2", and 3/8" hoses, but lists inlet ports as 1/4 in. & 1/2 in. The 3/8-inch connection detail is therefore unclear.
### What comes with the pump?
The listing claims oil, gloves and Teflon tape. A separate technical description lists oil, an adapter, Teflon tape and a pair of work gloves. Check the selected listing for the package contents.

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## Add-ons

- [TSI Supercool V32 68 Viscosity Synthetic Vacuum Pump Oil 32oz 1-Pack](https://best-deals.pro/visit/orion-motor-tech-omt-4-cfm-single-stage-vacuum-pump)
- [Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant, 30 ml \(1 Pack\)](https://best-deals.pro/visit/orion-motor-tech-omt-4-cfm-single-stage-vacuum-pump)

## Images

![Orion Motor Tech OMT 4 CFM Single-Stage Vacuum Pump, FBA-VPHB001OG — 1](https://best-deals.pro/i/ANw2diiAg9it2FxQoNStrrIMgn1PfiJ5gTKT5MLvS08IRNmZhsJWUqOPUk99ZNzBtUbBvOf2ieL2nFCHrO62MDslIwITWWRKdacz-3IFyWtubi1oxDlTxmzF.jpg)

![Orion Motor Tech OMT 4 CFM Single-Stage Vacuum Pump, FBA-VPHB001OG — 2](https://best-deals.pro/i/9NbkHz3rDoOTrq4fyyRlinCYOw5ZsVvK7wzZzb0XrrCkTVFJYCSFrKNTbE9enXBmAsipkxDbs5Qf7mix1IJUlC1GwxxNfNhOoajGn-FwkA6sX09a.jpg)

![Orion Motor Tech OMT 4 CFM Single-Stage Vacuum Pump, FBA-VPHB001OG — 3](https://best-deals.pro/i/PJoGoHmOF4O_0DBFEOLcftPrskRcWrVF5RFsBI8uPVvi-7-6PL3nBuqhkorx4B9JTD10EG9SlpZ8W9gdqtFtNkJB4cj0gEoEBkuWlmpktvYhhPJPTrqyGUfx.jpg)

![Orion Motor Tech OMT 4 CFM Single-Stage Vacuum Pump, FBA-VPHB001OG — 4](https://best-deals.pro/i/sHasrEIMa9L5tzbaLU-asygLVkR7gSSZpFKRD81LIHBQCKJQHD-AcIwAumTLqfN_z4KKxWhx49PSnXjaPr74-O9ghnRDp1biarfeqwJXBEYqZHkITpz2ePC3.jpg)

![Orion Motor Tech OMT 4 CFM Single-Stage Vacuum Pump, FBA-VPHB001OG — 5](https://best-deals.pro/i/AFuzAz-5LEKg4ZAahSJLJn1W76ehCFOCUdKS8OmCux3cWV5wKZO0LxbxdRlWxjq4cVfx3UZzWyRXQUAR3CgpKt8IYkbwaAUwU4NmgsWQ4-L_FCRQUQCq2Zof.jpg)

![Orion Motor Tech OMT 4 CFM Single-Stage Vacuum Pump, FBA-VPHB001OG — 6](https://best-deals.pro/i/ZD-gYVs1WzfuwqB8wdvBjTl8e1Wo0zxMX2JUc6bnb137oKpEI6LKU8WPeTLqxjJZhMGpkRVKnnQ31F8ytKJPQTu_DFBYKhxURJ9djoCv6eqisv6e.jpg)

![Orion Motor Tech OMT 4 CFM Single-Stage Vacuum Pump, FBA-VPHB001OG — 7](https://best-deals.pro/i/G6TRgtCmwtvGazEkmx2j40MJ-gl5ZN8302PvZr39TCjH3U7ItaimdwkcUmoE19E7QNO6jlp92ICSzJif5jgGkymnOc8V62TdtrGgkaVw4pfv54Oyz2_9HWJr.jpg)