SPECSTAR 1/3 HP 4.5 CFM Vacuum Pump with 4-Way Manifold Gauge Set — R134a/R410a Compatible, Portable HVACR Kit

The SPECSTAR 1/3 HP 4.5 CFM single-stage vacuum pump paired with a 4-way manifold gauge set is a portable HVACR evacuation and charging kit built to pull deep vacuums, measure refrigerant pressures precisely, and speed routine A/C service tasks.

This kit combines a high-torque 1/3 HP motor vacuum pump rated at 4.5 CFM with a robust four-way manifold gauge, color-coded hoses, and multiple adapters so technicians and advanced DIYers can evacuate, test, and recharge a wide range of refrigeration and air-conditioning systems. The unit is engineered for durability, quieter operation, and accurate pressure readings for common refrigerants including R134a, R12, R22, R502, and R410a.

How quickly and deeply can this pump evacuate an A/C system?

The SPECSTAR pump delivers high flow (4.5 CFM) and is capable of pulling systems down to low absolute pressures efficiently. That helps reduce moisture and contaminants faster than many lower-capacity pumps.

• 4.5 CFM flow rate for faster evacuation of lines and systems
• Designed to reach down to approximately 2 Pa in short cycles
• 1/3 HP high-torque four-pole pure copper motor for sustained output
• Visible oil window and bottom drain valve for easy oil checks and maintenance

Which refrigerants and system types will this set work with?

The kit includes ports, adapters, and gauge scales to support common automotive, residential, and small commercial systems. It’s suitable for a broad set of applications where 1–3 HP compressors are used.

• Compatible with R134a, R12, R22, R502 and R410a refrigerants
• Includes 1/2” ACME and 1/4” SAE ports plus multiple adapter fittings
• Recommended for 1–3 HP split A/Cs, 1–2 HP central A/Cs, small commercial units, and vehicle A/Cs
• Color-coded hoses (red, blue, yellow, black) for clear high/low/vacuum/add lines

What safety and durability features protect the pump and gauge during use?

The pump and manifold design integrate safeguards and robust materials to extend service life and reduce downtime. Thermal, anti-backflow, and filtration features protect internal components during routine service work.

• Thermally protected motor and current protector to prevent overheating damage
• Anti-backflow valve to reduce oil migration on sudden shutdowns
• Die-cast aluminum housing, shock-resistant gauge core, and rubber-wrapped body for durability
• 304 stainless steel coarse filter, cotton exhaust filter, and metal filter to limit contaminants and oil mist

How easy is the kit to handle and read in the field?

The SPECSTAR kit is built for portability and clear diagnostics so technicians can work more quickly on-site. Compact weight, ergonomic design, and readable gauges make multi-job days easier.

• Weight about 17.6 lbs with an ergonomic handle and non-slip feet for easy transport
• Large sight glass and ±1.6% accuracy gauge with oil-filled core for stable readings
• Color-coded, reinforced rubber hoses with leak-proof seals for flexibility and long life
• Calibration screw, zero-setting, and scales for R12, R22, R134a and R410a on the gauge

Who this is for: HVAC technicians, mobile A/C mechanics, and experienced DIYers who need a compact, dependable evacuation and charging solution. Choose this SPECSTAR kit if you require a mid-capacity 4.5 CFM pump that balances portability with professional-level features—precise gauges, multiple adapters, and service-friendly design elements make it suited for residential and small commercial refrigeration and automotive work.