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DEWALT DCE400D2 20V MAX PEX expander kit expands 3/8"–1" PEX Type-A tubing with an automatic rotating head, LED light, and full-trigger actuation for fast, reliable joints.
Categories : tools
SKU : WOR-TOO-436
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The DEWALT DCE400D2 20V MAX PEX Expander Tool Kit is a cordless, professional-grade solution for expanding PEX Type-A tubing from 3/8 inch to 1 inch. With an automatic rotating head that ensures even expansion, a bright LED work light, and full-trigger activation, this kit is engineered for speed and reliability in tight spaces. It’s proudly made in the USA with global materials.
The automatic rotating head expands evenly, reducing the risk of uneven fittings and making every connection secure. The full-trigger actuation lets you work quickly without manually rotating the head, saving time on large plumbing jobs. A dual-sided hang hook and belt hook keep the tool within reach, and the rubber overmold grip ensures comfort during extended use.
This kit uses DEWALT PEX heads and is compatible with Milwaukee and Uponor expander heads, giving you flexibility on the jobsite. The tool accepts all standard PEX expander heads with a 1-inch expansion capacity. The bright LED work light illuminates dark areas, so you can make accurate expansions even under sinks or in crawl spaces.
Expands 3/8"–1" PEX Type-A: Covers all common tubing sizes.
Automatic rotating head: Even expansion with less effort.
LED work light: See dark, confined spaces clearly.
Full-trigger actuation: One-handed operation in tight spots.
Compatible with DEWALT, Milwaukee, and Uponor heads: More flexibility.
Model: DCE400D2
LED Light: Yes
Tool Weight: 6.5 lb (2.9 kg) with battery
Kit Includes: Tool, 2 x 20V MAX batteries, charger, carrying bag
Power Source: 20V MAX battery (included)
Product Type: PEX Expander Tool
Hanging Hooks: Dual-sided hang hook and belt hook
Expansion Range: 3/8" to 1" PEX Type-A
Head Compatibility: DEWALT, Milwaukee, Uponor
Seller: Workbench World
MPN: DCE400D2
Expander fittings create a stronger, more streamlined connection because the expanded PEX pipe shrinks back around the fitting, creating a permanent seal. Unlike crimp rings, there's no metal ring to leak or corrode. The DCE400D2 makes the process faster and more consistent, especially in tight spaces. You'll get a professional joint every time.
For 1/2" PEX, use the 1/2" head; for 3/4" use the 3/4" head; for 1" use the 1" head. Always inspect the head for wear before use—a worn head can cause uneven expansion. The DCE400D2 is compatible with industry-standard heads, so you can use the same heads you already have from other brands.
Yes, it is compatible with Milwaukee and Uponor heads, as well as DEWALT heads.
The D2 kit includes two 20V MAX batteries (typically 2.0Ah) and a charger.
It expands PEX Type-A tubing from 3/8 inch to 1 inch.
Yes, the automatic rotating head provides even expansion without manual rotation.
This thing has saved me hours on a big repipe. It makes every joint with one squeeze. The rotating head lines up perfectly. The battery lasts all day. My customer was impressed with how neat it looked. I've already recommended it to two other plumbers.
Makes PEX easy.
Works great for my under-sink job. Just a bit heavy to hold steady.
Cuts my time on plumbing repairs. The head rotates so no kinks.
I've used other expanders and this is the most reliable. The automatic rotating head prevents mistakes. It powers through 1-inch PEX easily. The kit includes the expander head. The LED helps in dark crawlspaces. It's a quality investment.
Very useful tool.
Works well but the grease fitting is a bit messy. Still, joints are solid.
First time using a PEX expander and it was smooth. The full trigger actuation is intuitive. The joints hold on a pressure test. The kit comes in a sturdy case. The battery charges fast. I'm a convert.
My plumber used one and I asked to try. It's easier than I thought. I bought it for my own projects.
