VEVOR 3 CFM 1/4 HP AC Vacuum Pump and Manifold Gauge Kit

Description

3 CFM Single-Stage Vacuum Pump

This kit pairs a 3 CFM, 1/4 HP single-stage vacuum pump with a manifold gauge, three color-coded hoses, an R134a can tap and a hard case. It is a practical mobile set for small automotive AC systems where a compact pump and a complete service connection matter more than maximum displacement.

What is in the box: Pump, manifold gauge, three color-coded service hoses, R134a can tap, adapter fittings and a hard carrying case.

What 3 CFM and a single-stage design mean

Free air displacement tells you how much air the pump can move at its inlet under flow conditions. It is not the same as the flow rate once the system is near deep vacuum. A higher CFM pump tends to shorten the time needed to remove the initial volume of air, while the final micron reading depends on the pump’s ultimate vacuum, the condition of its oil, the hoses, the manifold seals and the leak tightness of the system.

The page does not print an ultimate-vacuum figure for this pump, so compare it by its listed 3 CFM displacement, 1/4 HP motor and 1,440 RPM rather than borrowing a deeper-vacuum claim from another model. A complete kit is useful, but the final vacuum still depends on hose seals, Schrader cores, O-rings and whether the system holds pressure.

Fittings and service setup

The listed intake fittings are 1/4 in. and 3/8 in. intake fittings. Check the thread and flare style against your manifold before connecting a hose. Use short, pressure-rated service hoses, replace damaged gaskets and keep the hose ends capped when they are not in use. A small air leak or a worn Schrader-core tool can make a good pump look weak because the micron reading never settles.

Where this kit fits

This is aimed at passenger-car AC repair, small refrigeration work and mobile service where the pump has to fit in a case. It is also a sensible starter kit for someone who needs a gauge set at the same time as the pump. It is not the best choice for a very large system or a workshop that repeatedly evacuates long lines.

• Evacuation: pull down with the service valves arranged according to the equipment procedure, then let the pump run long enough for moisture to leave the system.
• Leak check: isolate the pump and watch the vacuum hold. A rising gauge points to a leak or outgassing, not a reason to add refrigerant.
• Oil check: keep oil between the sight-glass marks and replace it when it looks cloudy, dark or contaminated.
• Heat: use the cooling fan and give the pump a sensible duty cycle; a hot body is a warning to stop and inspect.

Choosing this pump

Choose this 3 CFM case kit when portability and a complete automotive gauge set matter. Move up to a 4 to 5 CFM kit for faster pulls or larger systems, and choose a two-stage pump when you need the deeper vacuum and better moisture handling expected in more demanding HVAC work.

Before the first job

Confirm the supply voltage, set the pump on a level surface and check that the exhaust is not blocked. Fill the oil to the correct mark, close the inlet valve, and run a short no-load check while watching for unusual noise or oil movement. For refrigerant work, follow the equipment maker’s evacuation target, use a micron gauge, and never use vacuum alone as proof that a system is leak-free.

Wholesale pricing

One unit, wholesale pricing. The listed price is the wholesale rate for one pump. There is no minimum order quantity and no separate tier price, so buying one unit and buying several units use the same listed unit price.

Performance & Applications