A 4L foot operated grease pump moves the pumping action from your arms to your foot. You step on the pedal, the pump strokes, and both hands stay on the gun and the coupler. That matters when a fitting sits behind a driveshaft or above your shoulder, where one hand is never enough to hold the coupler square on the nipple.
What a 4L Foot Pump Does
The 4 liter tank holds enough grease for a full service round without turning the unit into a drum you cannot lift. It is a working compromise between capacity and portability, sized for auto shops, garages, and field service calls where the pump travels with the tool cart.
The body is powder-coated steel, so it stands up to shop handling and weather on a service truck. All moving parts run in grease, which keeps the piston and linkage lubricated by the same material the pump delivers. There is no separate oil bath to check or top up.
Key Specifications
The table below lists the working figures for the standard unit. Confirm the outlet thread against your hose and gun fittings before the first fill.
| Parameter | Value |
|---|---|
| Tank size | 4 liters |
| Max pressure | 8,700 PSI (600 bar) |
| Output per stroke | 2-3 grams |
| Hose | 2 m, 1/4 inch ID high-pressure |
| Outlet thread | M14 x 1.5 |
| Weight | 8-12.5 kg |
| Grease grades | NLGI 1 and 2 |
| Construction | Powder-coated steel |
Hands-Free Operation
The pedal drives a lever linkage that strokes the piston. Each press delivers a metered shot, so you control the dose by counting strokes rather than guessing at a trigger. Both hands remain free to seat the coupler and steady the gun, which reduces grease escaping past a crooked fitting.
Inside the tank, a wave action keeps the grease mixed as the pump works, so the material stays consistent from the first stroke to the last. No follower plate is needed. You fill the tank, close it, and pump. When you finish, the pressure return valve releases line pressure so the hose comes off the gun clean, without a spray of grease at the joint.
Where a 4L Pump Fits
This pump suits auto shops and fleet work, construction machinery, farm equipment, and industrial machines with grouped lubrication points. It also travels well for mobile field service, where a bench-mounted unit is not an option.
For higher-volume shops that grease several machines a day, the 8L foot operated grease pump doubles the tank and cuts refill stops. If you prefer a hand-held unit for small jobs, see the 0.8 kg hand grease pump. To compare drive options across the range, review our grease pump types.
Setup and Daily Care
Fill the tank with NLGI 1 or 2 grease and prime the line with a few pedal strokes until grease reaches the coupler. Check the hose and coupler before each use for cuts, bulges, or a worn jaw, and replace damaged parts before they fail under pressure.
Keep the grease clean and the tank covered when the pump is not in use. Grit that enters the tank travels to the piston and the fitting. Store the unit dry, with the pedal released and the hose coiled without sharp bends. A hand pump covers small touch-up work between full service rounds.
What Is Supplied
Each unit comes as a complete greasing set: the pump body with its 4 liter tank, a 2 m high-pressure hose with 1/4 inch ID, a pistol handle with steel extension, a heavy-duty coupler, a drum cover, and a carry handle. Send your machine list through our quote request page and we will confirm the outlet thread and hose length against your fittings.
Frequently Asked Questions
What is a 4L foot operated grease pump?
It is a pedal-driven grease pump that leaves both hands free. It suits workshops and heavy equipment service.
How much pressure does it develop?
It develops up to 8,700 PSI (600 bar) per the product specification.
How much grease comes out per stroke?
Each stroke delivers 2-3 grams. This controlled dosing reduces waste at each fitting.
Which grease grades can it pump?
It handles NLGI 1 and 2 greases.
How long is the hose?
The supplied hose is 2 meters of 1/4 inch ID high-pressure line.
Is a follower plate needed?
No. You fill the tank and pump, and wave action keeps the grease mixed.
How heavy is the unit?
It weighs 8-12.5 kg depending on configuration, so one person can carry it.
What thread is the outlet?
The outlet thread is M14 x 1.5.
How is the pump maintained?
Check the hose, coupler, pedal, and grease level, and keep the unit clean.
Who builds this pump?
IsoHiTech Lubrication Systems, founded in 2023, engineering since 2006, builds and supports every unit. Email inquiry@isohitech.com for specifications and a quotation.
For specifications matched to your fleet or plant, reach us through the quote request page.
