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The DEWALT DCE400B 20V MAX PEX expander handles 3/8–1-inch PEX-A tubing with an automatic rotating head and broad head compatibility.
Pair withDEWALT DCE511B 20V MAX Cordless Jobsite Fan$15.00
Categories : tools
SKU : WOR-TOO-311
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The DEWALT DCE400B 20V MAX 1-Inch PEX Expander Tool is a cordless tool designed for expand-and-connect PEX-A plumbing systems. It expands 3/8-inch to 1-inch PEX-A tubing and features an automatic rotating head that promotes even expansion for a reliable seal. As a tool-only kit, it runs on any DEWALT 20V MAX battery, giving you freedom on the job.
This expander is compatible with DEWALT PEX heads and accepts Milwaukee and Uponor heads, so you can use the heads you already have. A bright LED work light illuminates dark spaces, and the full-trigger actuation helps in tight clearances. Dual-sided hang and belt hooks make transport easy.
What heads fit the DCE400B? The tool uses DEWALT PEX heads as standard, but it's also compatible with Milwaukee heads and Uponor heads. When expanding, always use the correct head size for your PEX-A tubing, and inspect the head for damage before each use. The automatic rotating head removes the need to rotate the tool manually, making one-handed operation possible in confined spaces.
Expands 3/8-inch to 1-inch PEX-A tubing.
Automatic rotating head ensures even expansion.
Uses DEWALT PEX heads; compatible with Milwaukee and Uponor.
Bright LED work light for dark spaces.
Rubber overmold and dual hooks for comfortable carry.
Light: Bright LED
Model: DCE400B
Weight: 4.5 lb (2.04 kg)
Features: Automatic rotating head, belt/hang hooks
Dimensions: 12.0 x 5.0 x 8.5 in (30.5 x 12.7 x 21.6 cm)
Power Source: 20V MAX Li-ion (tool only)
Product Type: Cordless PEX Expander Tool
Head Compatibility: DEWALT; Milwaukee and Uponor heads
Tubing Compatibility: PEX-A 3/8-inch – 1-inch
Seller: Workbench World
MPN: DCE400B
Traditional PEX expanders require a half-turn during each expansion to create a uniform opening; the DCE400B rotates automatically, so each shoulder of the head expands the tubing evenly. This saves time and reduces errors.
Using one power tool with multiple head brands gives you flexibility on any jobsite. Just make sure the head is squarely seated on the tool and sized for the tubing before expanding. Heads typically match colored bands on PEX-A tubing, so verify that before you start.
Yes, the DCE400B works with Milwaukee and Uponor heads in addition to DEWALT PEX heads.
No, tool only (B model). Requires a DEWALT 20V MAX battery.
Expands 3/8-inch, 1/2-inch, 5/8-inch, 3/4-inch, and 1-inch PEX-A tubing with matching heads.
Yes, the head rotates automatically for even expansion.
Full trigger actuation and compact design help in tight areas.
Expands PEX perfectly.
This tool saves so much time compared to crimping. The rotary head makes it effortless.
I'm a plumber and I've used all sorts of expanders. This one is very good for the price. The head rotates smoothly and the tool grips well. However, it is a battery hog, so keep a couple of spares. It works perfectly with ProPEX fittings. Overall, a solid addition to my kit.
I plumbed my entire house with this. It made all the connections quickly. I only had to charge the battery once halfway through.
I've used this for hundreds of connections. It hasn't failed me yet. The rotating head is smooth. It's worth the investment for anyone who does plumbing.
I'm not a pro, and this was tricky to learn. The instructions are not very clear. The tool works, but I think I'll stick to crimping for now.
I've been doing plumbing for over 40 years, and this is a quality tool. It has paid for itself already. The expansions are consistent. I don't regret the purchase.
It works well on 1/2 and 3/4 inch PEX. On 1 inch it feels like it struggles a bit. But it still made the connection. Just be patient.
I used this for my radiant floor heating. It was so much easier than I expected. The tool is comfortable to hold. My husband was impressed.
I threw away my crimping tools after using this. The connections are more reliable. It takes a bit of practice, but then it's fast.
It's good, but the battery drains fast if you're doing a lot. I recommend a bigger battery. Otherwise, it's fine.
