PB Motor Tech 4.5 CFM Vacuum Pump Kit with Solid-Brass Manifold — 1/3 HP, R134A R12 R22 R502

PB Motor Tech's 4.5CFM vacuum pump paired with a solid-brass manifold gauge kit provides a compact, all-in-one solution for refrigerant evacuation, diagnostics, and charging on automotive and residential AC systems.

This kit brings together a single-stage 4.5 CFM vacuum pump and a heavy-duty brass manifold with extra-large dials, purpose-built for technicians and DIYers who need a portable, dependable setup for R134A, R12, R22 and R502 systems. The pump features a 1/3 HP motor, reinforced aluminum housing, and visible oil sight glass; the manifold bundle includes color-coded 4-foot hoses, quick couplers, a can tap, valve core tool and adapters so you can start work immediately after adding the recommended oil.

How quickly will the vacuum pump remove moisture and air from a system?

The pump's 4.5 CFM flow rate and single-stage design deliver efficient evacuation for small to medium systems, helping you reach required vacuum levels faster than lower-capacity pumps. The inlet filter reduces oil backflow and preserves pump performance over repeated uses.

• 4.5 cubic feet per minute flow for faster pull-down
• 1/3 HP motor balances power and portability
• Inlet filter prevents contamination and oil migration
• Reinforced aluminum alloy housing for heat dissipation

What gauges, hoses and adapters are included for charging and diagnostics?

The brass manifold gauge assembly is built from solid brass with an easy-to-read sight glass and oversized rubber-coated dials for improved visibility and durability in the field. Color-coded 4-foot hoses rated to 600 psi working pressure and 3000 psi burst pressure make system connection straightforward and safe.

• 3-way brass manifold with large, rubber-coated gauges
• Three 4 ft color-coded hoses (high, low, service)
• R134a quick couplers, 410 adapter and puncturing can tap included
• Valve core tool for on-site service and maintenance

What maintenance or setup is required before using this pump and manifold?

For safe operation the vacuum pump is shipped without oil — you must add vacuum pump oil before running. PB Motor Tech recommends ISO #32 or #68 vacuum pump oil; running the pump dry may damage the motor within minutes. Routine checks of oil level via the sight glass and replacing oil when contaminated will extend life and performance.

• Add recommended #32 or #68 vacuum pump oil before first use
• Monitor oil level and color through the sight glass
• Inspect hoses and couplers for leaks before charging
• Store with rubber feet down to reduce vibration damage

Is this kit compatible with the refrigerants I work with?

The manifold and pump are suitable for common automotive and domestic refrigerants including R134A, R12, R22 and R502, making it versatile for many service tasks. Always follow refrigerant handling regulations and use appropriate PPE when recovering or charging refrigerants.

• Compatible with R134A, R12, R22, R502 systems
• Designed for both automotive and residential AC applications
• Includes adapters and fittings to broaden compatibility
• Follow local codes for refrigerant recovery and disposal

Who is this for: This PB Motor Tech bundle is aimed at professional technicians, fleet maintenance crews, and experienced DIYers who need a portable yet capable vacuum pump and a complete brass manifold set for refrigerant evacuation, leak-checking, and charging. If you require a rugged kit that combines fast evacuation, clear diagnostics, and field-ready fittings, this package gives you the main tools to perform routine AC service and recovery tasks with fewer trips back to the shop.