Orion Motor Tech 3.5 CFM AC Vacuum Pump & Gauge Set — R134a/R12/R22/R502, 1/4 HP Durable Aluminum Case

Orion Motor Tech's OMT 3.5 CFM AC Vacuum Pump and Gauge Set is a complete automotive HVAC service kit that evacuates, gauges, and helps recharge systems using R134a, R12, R22, or R502 refrigerants.

This kit combines a compact 1/4 hp vacuum pump with a three-way manifold gauge, reinforced hoses, hardware adapters, vacuum oil, and storage—designed to let DIY mechanics and professional techs remove moisture and air from vehicle and light HVAC refrigerant circuits before charging. The pump's copper windings and aluminum alloy housing focus on steady performance and heat management, while the included gauge and couplers give clear, real-time feedback during service jobs.

How quickly and effectively does the pump evacuate an AC system?

The pump delivers a 3.5 cubic feet per minute (CFM) evacuation rate through an all-copper motor and engineered airflow. Its aluminum alloy case assists heat dissipation so the pump can run for service intervals without overheating; brass-fitted tethered caps reduce oil loss and contamination risk.

• 3.5 CFM flow rate for efficient evacuation
• 1/4 horsepower motor with copper windings for durability
• Aluminum alloy casing to disperse heat and resist corrosion
• Brass-fitted tethered safety caps to prevent oil leaks

What monitoring and connection features does the gauge set include?

The three-way manifold gauge provides instant pressure readings so you can observe system vacuum and later charging stages. Color-coded charging hoses with multi-layer construction deliver clear identification, reliable pressure handling, and fast connection via included quick couplers and taps.

• 3-way manifold gauge for vacuum and pressure checks
• Color-coded hoses built with four layers for durability
• Rated for working pressures up to 600 psi, 3000 psi burst
• R134a self-sealing and puncture-style taps plus quick couplers

What convenience and maintenance features are built into the kit?

Designed for straightforward operation and upkeep, the pump has a visible sight glass for oil level checks, a bottom drain valve to empty oil without tilting the unit, and an integrated cooling fan for thermal management. The kit ships with 0.26 quarts of vacuum oil and storage solutions to keep components organized between jobs.

• Sight glass for quick oil level inspection
• Bottom drain valve for easy oil changes
• Built-in cooling fan for continuous operation
• Includes 0.26 qt vacuum oil and a durable case/bag for transport

Which refrigerants and systems is this kit suitable for?

The set supports common automotive and light HVAC refrigerants, making it versatile for many service tasks. Use it for evacuation on systems that accept R134a, older R12 or R22 circuits, and R502 where applicable—always follow refrigerant handling regulations and safety guidelines.

• Compatible with R134a, R12, R22, R502 refrigerants
• Appropriate for automotive air conditioners and light HVAC units
• Includes adapters and taps for common service connections
• Durable hoses and fittings built to withstand shop use

Who is this for: This Orion Motor Tech kit is aimed at DIY enthusiasts who perform routine AC maintenance and independent mechanics or small shops that need a portable, affordable evacuation and diagnostic solution. It balances professional-style features—such as a copper motor, reinforced hoses, manifold gauge, and service fittings—with compact packaging and clear visual controls for users who want dependable vacuuming and accurate pressure monitoring without industrial-scale equipment.