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Project

Extract Old Cartridge — Remove the Old Valve

Beginner3 hours

Part of project

Delta Shower Faucet Installation & Upgrade Guide · Step 3 of 5

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In this video

With the valve assembly removed and accessible, use a socket and ratchet to loosen the large nut holding the cartridge in place. Once loosened, unscrew it by hand. The old cartridge can then be pulled out of the valve body. Note the buildup and wear on the old cartridge, which is the cause of the leak.

Goal: Remove cartridge

Used in this video

  • Deep Well Socket (Jaw Size/Opening: 5/8 inch) — Loosening the cartridge retaining nut.
  • Ratchet (brand: Craftsman) — Turning the socket to loosen the nut.
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FAQs

How do I ensure the water is completely off before I start the installation?

Locate the main water shut-off valve for your home or the specific shut-off valves for the bathroom. After turning them off, open the existing shower faucet handles to release any remaining pressure and confirm water flow has stopped. This prevents unexpected gushes and makes the job cleaner and safer.

Besides a screwdriver and pliers, what other tools might I need for removing my old faucet or installing the new Delta one?

You might need an Allen wrench (often included with new faucets or for old handle removal), a utility knife for cutting caulk/sealant, and plumber's tape (Teflon tape) for threaded connections. A basin wrench can sometimes be helpful for tight nuts, though less common for shower valves.

What are the most common reasons for leaks after installing a new Delta shower faucet, and how can I prevent them?

Leaks often occur due to improperly tightened connections, missing O-rings, or incorrect cartridge seating. Ensure all threaded connections are hand-tightened, then given a quarter to half turn with a wrench, using Teflon tape on male threads. Double-check that the cartridge is fully inserted and secured according to Delta's specific instructions.

Is the 3-hour estimated time realistic for a beginner, or should I budget more time, especially if removing an old faucet?

While 3 hours is achievable for a straightforward replacement, beginners should budget 4-6 hours. Removing an old, corroded faucet can take extra time and effort if screws are seized or old caulk needs extensive cleaning. Always allow buffer time for unexpected issues.

Transcript
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Get that out of the way. All right, we've got it to break loose. A little bit more of the water we talked about. All right, so here's the old cartridge, extra water. But you can see we've got some cartridges, some build up on the old one.

Auto-generated transcript. May contain errors.