What This Pump Is
This is a portable electric transfer pump that drops onto a standard 5 gallon (20 L) pail. In plain terms, it is an electric oil transfer pump: a pail pump built for fluid transfer between containers rather than metered lubrication. It is self-priming with a wet pickup, so you do not fill the line by hand. The stem reaches the bottom and the pump runs on line power or battery.
Its job is transfer duty: emptying a pail into a machine reservoir, a tank, or a waste container. It is not a machine lubrication pump and it does not meter oil into bearings. For filling small lubrication points, choose a different tool.
Safety framing comes first: non-flammable liquids only. Never pump gasoline, diesel, kerosene, acetone, or strong acids and bases.
If your site runs on compressed air, the air operated alternative covers the same pail work with no motor.
Declared Specifications
These are the declared values for the pail version. Nominal flow is quoted per model at ordering, because the rate depends on the fluid and the hose.
| Container | 5 gallon (20 L) pail |
| Power versions | 120V AC, 12V DC, 18V battery |
| Seal options | nitrile (NBR) or fluoroelastomer (FKM) |
| Fluids | non-flammable liquids |
| Nominal flow | quoted per model at ordering |
Stem length, hose size, and the seal you fit are confirmed against the fluid you name at ordering.
Fluid Compatibility
This pump handles engine oils from 10W-30 through straight 50 grades, coolant, antifreeze, water, and mild detergents.
Cold oil moves slower, and a straight 50 grade at low room temperature pumps at a lower rate than a light engine oil.
Excluded fluids are the flammable and aggressive ones: strong solvents, gasoline, diesel, kerosene, acetone, and strong acids and bases are out.
When the transfer ends at a spout rather than an open tank, a dispensing nozzle gives control at the outlet.
Suction Setup: From Pail Bottom to Drum Bung
On this pail pump, the pickup tube drops through the container opening and reaches down toward the base of the pail, so almost all of the contents move before you swap containers.
For drum work, a rigid suction tube combined with a 2-inch bung adapter is a common drum-pump arrangement for fluid transfer at the drum scale; this page covers the pail version, and drum builds are confirmed at ordering.
Letting the suction tube run near the bottom of the container, with an inlet screen or strainer that keeps debris out of the pump, is common practice – it protects the seal and the moving parts during fluid transfer.
The seal follows the fluid: nitrile (NBR) pairs with mineral oils, and fluoroelastomer (FKM) pairs with synthetic oils, matching the two seal options listed under Declared Specifications.
This oil pump is rated for non-flammable liquids only; flammable solvents or fuels require explosion-proof (ATEX-rated) equipment.
Choosing the Seal Material
Seal choice decides how long the pump lives with the fluid you name. Two options are offered: nitrile (NBR) and fluoroelastomer (FKM).
Nitrile (NBR) suits common petroleum oils, coolant, antifreeze, water, and mild detergents. It is the default pick for standard shop transfer work.
Fluoroelastomer (FKM) is the pick for synthetic oils and additive-heavy fluids, where the additive package is aggressive toward standard rubber.
Name the fluid, the grade, and any additive package, then confirm the seal against that answer at ordering. A wrong seal shows up later as swelling, hardening, or a slow drip.
Pail versus Drum Duty
The pail stem and adapter fit the 5 gallon opening, which is the container this page covers. Drum versions use longer stems and a different adapter, because the opening and depth differ. Confirm the container before ordering.
A pail sits low, so the lift is short. A drum sits taller and deeper, so the stem must reach the bottom without resting on the base.
Send the container type, the fluid, and the power source through the contact page and the build gets matched to the job.
Operating Tips
Prime before the first run. Fill the pickup and the line with fluid, then start the pump. Running dry wears the moving parts and puts only air in the hose.
Keep the pickup submerged. If the pail runs low, tilt it or stop and swap containers before the pump pulls air.
Flush between incompatible fluids. Moving from coolant to oil leaves a film that contaminates the next fluid. Run a compatible flush, then drain and dry the pump before the next job.
Store dry. Wipe the body, drain the hose, and keep the unit indoors on a shelf.
It moves fluid between containers; it does not lubricate machinery on a schedule. For that duty, a machine lubrication pump is the correct tool.
For scheduled, metered lubrication rather than container transfer, see the oil lubrication pumps range for pumps that meter oil to bearings on a schedule.
Frequently Asked Questions
What fluids can it transfer?
Engine oils from 10W-30 through straight 50 grades, coolant, antifreeze, water, and mild detergents are all supported. Gasoline, diesel, kerosene, acetone, and strong acids and bases are never allowed.
How fast does it empty a pail?
Nominal flow depends on the fluid, the power version, and the hose you run. The rate for your model is quoted at ordering, so ask for it then.
What is the difference between the AC, DC, and battery versions?
All three move the same fluids through the same pail adapter. The 120V AC version needs an outlet, the 12V DC version runs from a vehicle, and the 18V battery version runs cordless.
Which seal material should I choose?
Pick nitrile (NBR) for common oils, coolant, antifreeze, water, and mild detergents. Pick fluoroelastomer (FKM) for synthetic oils and additive-heavy fluids, and confirm the choice at ordering.
Can it run outdoors in the rain?
It is a dry-location tool, so keep it out of standing water and direct rain. Wipe the body dry after a wet job and store it indoors.
Which pails does it fit?
The pail stem and adapter fit the standard 5 gallon (20 L) opening. Drum openings and depths differ, so confirm your container before ordering.
Is it self-priming, and how far can it lift?
It is self-priming with a wet pickup, so the line fills with fluid rather than air. Lift is short and stated per model at ordering.
Can it pump gasoline or diesel?
No. Gasoline, diesel, kerosene, acetone, and strong acids and bases are excluded, and this pump is for non-flammable liquids only.
What should I state when ordering?
State the fluid and its grade, the container, the power source, the seal preference, and the hose you plan to run. Send those details through the contact page so the build is matched to your job.
How do I get specifications and a quotation?
IsoHiTech Lubrication Systems, founded in 2023, engineering since 2006, builds and supports every unit. Email inquiry@isohitech.com for specifications and a quotation.
