Today, we’re diving into the DeWalt PEX Expander, specifically the 20V MAX 1” Brushed model (DCE400). DeWalt claims it’s the fastest 3/8″-1″ PEX-A expander on the market, promising top-notch performance for plumbing and DIY projects. Let’s break down its specs, features, and how it stacks up against competitors like the Milwaukee 2532.
Quick Specs
- Capacity: 3/8″ to 1″ PEX-A
- Weight: 4 lbs (without battery or expansion head)
- Power Source: 20V MAX battery
Key Features
The DeWalt PEX Expander shines with practical features for professionals and DIYers:
- Super Bright LED Work Light: Lights up your workspace well, but a little bright for my taste.
- Reversible/Removable Belt Hook: Offers flexible storage or hands-free convenience.
- Rubber Overmold Grip: Ensures comfort during long plumbing tasks.
- Cross-Compatible: Works with Milwaukee and Uponor expansion heads for versatility.
The DCE400B (bare tool) includes a carrying case, 1/2″, 3/4″, and 1″ expansion heads, and expansion cone grease. The DCE400D1 kit (possibly discontinued) had only 1/2″ and 3/4″ heads. Its successor, the DCE400D2, bundles everything in the DCE400B plus two 2Ah batteries and a 4A charger.
DeWalt DCE400 vs. Milwaukee 2532
How does the DeWalt PEX Expander compare to the Milwaukee 2532, another top PEX-A tool? Both claim lightning-fast expansions for 3/8″-1″ PEX-A, so we tested them head-to-head with 3/4″ PEX-A, running three sets of ten expansions each.
Results: The Milwaukee was slightly faster, but the DeWalt PEX Expander opened the pipe wider by about 3/32″. In real-world use, they’re nearly identical. Interestingly, slower expansions may slow contractions, giving the DeWalt a few extra seconds to insert fittings. This matters when following best practices, like wiping excess grease from the tube before insertion (though, let’s be real, most skip this step).
Both tools offer a tight 5-7 second window for fitting insertion, even with extra pumps. The manuals suggest 11-12 pumps for 3/4″ PEX but advise stopping when the tube hits the cone base. In warm weather, six pumps did the trick, so adjust based on conditions.
What’s the Deal with the LED Light?
The DeWalt PEX Expander’s LED work light is ridiculously bright, holding peak intensity for 2.5 minutes before dimming for 30 seconds. By contrast, the Milwaukee 2532’s light—still bright but less intense—shuts off after 11 seconds. Neither tool allows brightness adjustments, so you get what you get.
DeWalt PEX Expander Build Quality
Beyond its standout light, the DeWalt PEX Expander feels tougher than the Milwaukee 2532. I’ve tested two brushed and one brushless Milwaukee expanders, and all had noticeable play between the head and body. The DeWalt DCE400? It’s rock-solid—no wobble, no play, just a sturdy DeWalt tool built to last.
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DeWalt DCE400 PEX Expander
Bottom Line
If you need a reliable PEX-A tool for plumbing or DIY, the DeWalt PEX Expander (DCE400) delivers speed, versatility, and durability. Pair it with a 20V MAX battery, and you’re ready to tackle any PEX-A job. Whether you’re a pro or a weekend warrior, this DeWalt tool is a solid pick. Hope it works as well for you as it did for us!
