Drum Pump Stops Mid-Barrel? Rotary, Lever or Electric Explained

Your drum pump gushes for a few litres, then splutters and stops. Or the AdBlue pump you bought will not fit the bung on the drum. Most drum pump headaches come down to three things: venting, seals and bung threads.

PartsForMachines lists 47 drum pumps, siphons and fitting accessories from Sealey, Draper, Tecalemit, SIP and DyMac in its barrel and drum pumps range. They run from lever and rotary hand pumps to electric and AdBlue types.

Rotary, Lever or Electric: Which Drum Pump Should I Buy?

Buy for the volume you move each week: a lever pump for occasional top-ups, a rotary pump for regular drum work and an electric pump for big, frequent transfers. A lever pump gives a measured shot each stroke, from about 330ml on the TP66 to 500ml on the TP68.

Rotary output varies more than people expect, so compare litres per turn. The 22265 high flow rotary hand pump moves 1 litre per turn of the handle, while the TP54 manages about 0.3 litres. If you fill machines every day, go electric: the TP6818 electric drum pump runs from mains or 12V battery clips at 16 litres a minute.

Why Does My Drum Pump Stop After a Few Litres?

Usually because the drum is not vented. As fluid leaves a sealed drum, a vacuum builds until the pump can no longer pull. Before you start, loosen the drum’s vent plug so air can replace the fluid. If it still loses suction with the vent open, check that the dip tube reaches the bottom of the drum. Telescopic tubes, like the one supplied with the 47808 lever pump, extend that far.

Can One Pump Handle Diesel, AdBlue and Oil?

Diesel and oil can often share a pump listed for both, but AdBlue needs a pump of its own, because the seals and body materials decide what a pump can carry. Fuel or oil in AdBlue can damage the vehicle’s SCR exhaust system, and a pump shared with other fluids is one way it gets in. Keep a dedicated AdBlue pump and hose.

The TP6809 lever action AdBlue pump has Viton seals and gives about 500ml per stroke. For fuel, choose a pump listed for it: the 47808 is for petroleum-based liquids only, while the 13381 plastic lever pump must not be used for fuel, thinners or solvents.

Will the Pump Fit My Drum’s Bung Thread?

Many of our drum pumps come with a 2″ BSP adaptor, but not every drum has a BSP bung, so check the thread on yours and which adaptors are in the box. The TP6806 AdBlue lift action pump comes with both 2″ Mauser and 2″ BSP adaptors for 205-litre drums.

Check the drum size range as well. The 90141 gear oil pump has a 2″ BSP collar for most 20 and 25-litre drums, while the TP66 fits only 100 and 205-litre drums.

What Should I Check Before I Buy?

the fluid: diesel, petrol, oil, AdBlue or chemicals, and a pump listed for it (keep AdBlue separate)
the bung: 2″ BSP, Mauser or a 50mm screw bung, and which adaptors come with the pump
the container size: 20–25 litre cans, 50–205 litre drums or a 1000-litre IBC, and the dip tube reach
how much you move each week: output per stroke or turn against an electric pump’s flow and duty cycle
the power: hand, 12V battery clips, mains or batteries, plus a bracket if the pump stays on the drum

Browse the barrel and drum pumps range, or contact the PartsForMachines team by WhatsApp, telephone or email with the fluid, the drum size and a photo of the bung.

Product options, delivery options and returns terms are shown on each product page. A 30-day return policy applies to eligible items.

Frequently Asked Questions

Can I use a diesel drum pump for petrol?

Only if the pump is listed for petrol; some, such as the 13420 siphon drum pump, must not be used with any flammable liquid. The TP6918 double diaphragm fuel transfer pump, for example, lists petrol, diesel and paraffin and has an anti-static discharge hose.

Why won’t my pump shift thick gear oil?

Many drum pumps are built for thin fluids; the 22265, for example, is for low-viscosity liquids. For gear oil, use a pump made for it, such as the 90141 gear oil pump, which delivers 130ml per stroke and has a safety shut-off valve.

How long can an electric drum pump run?

Check its duty cycle. The TP6818 is rated at 15 minutes on and 30 minutes off, so plan a big transfer in batches, with rests in between, rather than running it non-stop.

Is a battery pump enough for 20-litre AdBlue cans?

For cans and small drums, it can be. The 07030 battery pump moves up to 10 litres a minute through a 385mm suction tube sized for 20-litre drums. It runs on two LR20 batteries, which are not supplied.

Do drum pumps need priming?

Self-priming lever and piston pumps, such as the TP66 and TP89, start drawing without any manual siphoning. A siphon pump such as the 13420 works differently: it only moves liquid to a level lower than the pump.

How do I dispense small, measured amounts?

Use a piston pump with adjustable output. The TP89 gives 200ml per stroke, and its two supplied sleeves cut that to 40, 80 or 140ml. Its anti-drip nozzle stops waste between strokes.

Can I fit a pump to a 1000-litre IBC?

Yes, with the right dip tube or bracket. The TP6809’s dip tube extends from 350 to 980mm to suit 100 to 205-litre drums or a 1000-litre IBC, and the ADB08 bracket holds 12V and 230V pumps on an IBC.

Which pump should I use for thinners or solvents?

One listed for that liquid, with chemical-resistant seals. The 43967 chemical drum pump uses PTFE seals with a stainless plunger rod, for thinners, acetone and mild acids. Do not use a pump that excludes solvents, such as the 13381 plastic lever pump.