VEVOR 3.5 CFM 1/5 HP Single-Stage Vacuum Pump, 120V

Description

3.5 CFM Single-Stage Vacuum Pump

This compact 3.5 CFM, 1/5 HP single-stage pump is rated to 40 microns and runs at 1,720 RPM on 120V. It has 1/4 in. SAE and 1/2 in. ACME inlets and arrives with one 250 ml bottle of oil. It is a good fit for small AC and refrigeration jobs where the pump must stay light and easy to store.

What is in the box: Vacuum pump, user manual and one 250 ml bottle of vacuum pump oil.

What 3.5 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.

A small pump still needs a leak-free setup. Check the service hoses and manifold seals before blaming the pump for a slow micron rise. The 250 ml oil bottle covers the initial fill, but oil should be replaced when it becomes cloudy, contaminated or moisture-loaded. Keep the oil level between the sight-glass marks and never run the pump with the inlet open to atmosphere for an extended period.

Fittings and service setup

The listed intake fittings are 1/4 in. SAE male and 1/2 in. ACME male. 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 pump fits

Use it for passenger-car AC, compact refrigerators, dehumidifiers and small sealed systems. It is also useful for teaching or occasional DIY work because the controls and oil sight glass are simple. For a large system or repeated all-day service, the higher-displacement 4.5 to 7 CFM models reduce waiting time.

• 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 pump if light weight and a small footprint matter more than speed. Move up to the 4.5 CFM pump for more displacement, or the 5 to 7 CFM two-stage pumps for deeper vacuum and a layout aimed at more sustained 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

Pure Copper CoilFast Heat DissipationReduce Backflow&Emissions

››‹‹‹

Easy MonitoringEffortless GripVarious Interfaces

››‹‹‹

Wood StabilizationRefrigeration MaintenanceLaboratory DIY

››‹‹‹

Key Features

Sight Glass

Exhaust Fitting(Oil Fill Cap)

Fan Cover