Increase pump rates by 40% and reduce waste by up to 95%.

Uniflow Hot Melt Drum Unloaders will improve your production capacity and lower operating costs. You’ll be able to pump high-viscosity materials at very high pump rates.

Uniflow 55 Gallon Drum Unloaders have been used for Hot Melt applications around the world since 1975. Whether you choose the model 4230, 230, or 2035—you’ll get higher production rates, lower operating costs, and better reliability than with any competing machine.

Choose from a wide range of options and accessories that will adapt to your unique pumping requirements. Click below to discover the Uniflow advantage.

Pump at Least 40% Faster

Uniflow Hot Melt 55-gallon Drum Unloaders will allow you to pump at high volume—at least 40% faster than any other drum unloader. Guaranteed.

Reduce Material Waste By Up to 95%

The unique design of our hot melt adhesive unloaders enables you to pump nearly all the material from the drum and eliminate waste.

Maintain Continuous Output

Our Tandem Drum Unloaders will allow you to maintain continuous output at all times—and eliminate downtime while increasing productivity.

Explore Our Hot Melt Drum Unloaders


The Uniflow Model 4230 Hot Melt Drum Unloader is priced similarly to other pneumatic drum melter unloaders. However, the Model 4230 is guaranteed to pump at least 40% faster than any other machine. The unique platen design pumps nearly all of the hot melt material from each drum, thereby reducing material waste by up to 95%.


The Uniflow Model 230 Hot Melt Drum unloader is designed for very high viscosity materials (e.g. PUR adhesives) and/or very high output pump rates. This hydraulic machine offers exceptional control and a wide range of options that adapt to unique pump requirements.
Tandem Hot Melt Drum Unloaders


If you need to maintain a continuous output on hot melt material, we can build you a tandem drum unloader system with either our Model 4230 or Model 230 machines.

Tandem drum unloaders allow you to keep a continuous flow of hot melt on your production line and eliminate downtime as 55-gallon drums are changed out.

As soon as a drum runs out, you’ll be able to have another drum heated up and ready to go.


Many coating applications require continuous flow, so the operation cannot stop for five minutes for a drum change. The Uniflow Continuous Output Systems use two or more Drum Unloaders to provide the capacity and the uninterrupted flow that certain applications require.

Get In Touch

If you are not sure which Drum Unloader is best for you we’d be happy to assist you. Quotes are typically delivered in one day and new Model 4230 machines can be delivered in as few as two weeks. 

Get Your Hot Melt Hoses Performing Like New

We can clean your heated hoses for a fraction of the cost of a replacement hose and offer a fast 2-4 week turnaround time for most projects.

Learn About Our Hose Cleaning Process

Hot Melt Drum Unloader Resources

Estimating the Cost of a Drum Unloader

Learn more about the various factors that can affect the overall cost of a drum unloader.

Solving Problems with Hot Melt Drum Unloaders

If you notice your pump rate declining, discover how to troubleshoot and fix the problem.

Pumping to the Bottom of the Barrel

Learn how a Uniflow pump can pump to the bottom of the barrel and save up to 10% in material costs.