Milwaukee and Uponor Team Up to Change the ProPEX Game
Milwaukee Tool and Uponor have partnered up again to improve the consistency of ProPex installations. The Milwaukee M12 Fuel ProPEX Expander, due out in December, ups the ante with a brushless motor. It also includes three different Rapid Seal heads to cover 1/2โณ through 1โณ PEX. The new heads seal up to 65% faster than competitive solutions at 45ยบ.
Milwaukee and Uponor Together Again
We are excited to once again partner with Uponor, to deliver the next breakthrough in productivity for ProPEX installs. With the introduction of the new M12 FUEL ProPEX Expander, installers can expect the fastest 3/8โ-1โ expansions and decreased seal times especially as temperatures decrease, all while maintaining the promise of the most consistent installations.
Morgan Sokany, Senior Product Manager for Milwaukee Tool

Key Features

The Milwaukee M12 Fuel ProPEX Expander features a brushless motor that delivers more power, speed, and runtime than the Milwaukee 2432-20 ProPEX installation tool even under the toughest conditions. Milwaukee claims that it even provides up to 25% faster connections.
It also comes standard with three new ProPEX Expander Heads with Rapid Seal. Milwaukee and Uponor have designed these heads to provide quick fitting installation and faster sealing connections in colder temperatures.
The Milwaukee M12 ProPEX Expander features an extended dual-actuating trigger for better access in hard-to-reach areas. It also comes with an auto-rotating head for quick and uniform expansions. You also get a built-in LED lightโsomething we almost take for granted now on the newest cordless tools.
Milwaukee 2432-20 vs 2532-20 ProPEX Installation Tools
| 2432-20 | 2532-20 | |
|---|---|---|
| Brushless motor | No | Yes |
| Quick cam mechanism | Yes | Yes |
| Capacity | 3/8โณ โ 1โณ | 3/8โณ โ 1โณ |
| Uponor Expander heads | Supported | Supported |
| ProPEX Expander Heads with RAPID SEAL | Optional | 3 Included (1/2โณ, 3/4โณ, 1โณ) |
| Auto-rotating | Yes | Yes |
| Belt hook | No | Yes |
| Price (w/o batteries) | $219 | $429 (includes heads) |
Notable Improvements
Clearly the new ProPEX Expander Heads with Rapid Seal and brushless M12 FUEL motor top the charts on whatโs new here. We also canโt help but note the handy belt hookโwe always like seeing those. We look forward to getting this tool into the hands of one of our Pro plumbers to see the improvements over the former M12 model. Weโd expect reasonable speed improvements and certainly more run-time. In the endโthis looks like a great indicator that Milwaukee remains committed to maintaining and expanding its hold on the world of cordless PEX plumbing tools.

Pricing and Availability
The Milwaukee M12 Fuel ProPEX Expander Kit comes with the tool, 1/2โณ, 3/4โณ, and 1โณ ProPEX Expander Heads with Rapid Seal, two M12 CP2.0 batteries, a charger, cone grease, and a carrying bag. It will also come as a bare tool option with the Rapid Seal Heads sold separately.
Milwaukee M12 Fuel ProPEX Expander Specs
- Kit Model: Milwaukee 2532-22
- Capacity: 3/8โ-1โ
- Heads Included: ยฝโ, ยพโ, 1โ
- Trigger: Dual Actuating
- Auto-Rotate: Yes
- Weight: 4.5 lbs (w/o battery)
- Warranty: 3 years
