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Secure Valve and Reconnect Lines — Install the New Toilet Fill Valve

Beginner2 hours

Part of project

Fix Leaky Toilets: A Step-by-Step Guide to Replacing Your Fill Valve · Step 4 of 6

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In this video

Secure the new fill valve by threading the new locknut onto the shank from underneath the tank. Hand-tighten it first to ensure it's straight, then use a wrench for a final quarter to half turn. Reconnect the water supply line to the new valve and hand-tighten the coupling nut. Inside the tank, attach the new refill tube to the valve and clip the other end to the overflow pipe, cutting the tube to length if necessary.

Goal: Securely install and reconnect the new fill valve

  • Do not overtighten the plastic locknut or supply line nut, as this can cause them to crack and leak.

Used in this video

  • Adjustable Wrench (Tool Type: Hand Tools, Wrench Type: Adjustable crescent) · optionalTo give the locknut a final tightening.
  • Pliers (Tool Type: Hand Tools, Pliers Type: Needle-nose) · optionalTo cut the refill tube to the correct length.
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FAQs

My new fill valve is leaking where it connects to the water supply line. What should I check?

First, ensure the connection is hand-tightened, then gently snug it with your adjustable wrench, being careful not to overtighten and strip the threads. Also, check that the rubber washer inside the coupling is properly seated and not pinched or missing; a new washer may be needed if it's damaged.

Is replacing a toilet fill valve truly a beginner-friendly project, and how much time should I set aside?

Yes, this project is very beginner-friendly and perfect for a first-time DIYer. Most people can complete the entire process, including preparation and testing, within 1 to 2 hours. Taking your time and carefully following each step will help ensure a successful repair.

What crucial safety precautions should I take before starting this toilet repair?

Always begin by turning off the water supply to the toilet, usually via a small shut-off valve at the wall or floor. After turning it off, flush the toilet to empty the tank as much as possible to minimize water spills when you disconnect lines and remove the old valve.

Besides an adjustable wrench, are there any other tools I might need for this project?

An adjustable wrench, like the Husky 12 in. Adjustable Wrench, is the primary tool you'll need. You might also find a bucket helpful to catch any residual water from the tank or supply line, and a sponge or old towel for easy cleanup of small spills.

Transcript
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Okay, guys. Well, I'm going to have to cut my, uh, the holes to length here. So. Just let you guys know. Put the knot on. You ready? Mm-hmm. I'm walking here, baby. Thanks. I give you guys credit. It's professionals. It's not a separate credit. Okay. Okay, let's go check on top. Make sure I get straight. Do you guys look straight to me? Daddy. Okay. Just take this. What are you doing? I'm not going to over-tighten this. I'm just going to make you a little bit finger tight. And if it does leak, you know, just make it tighter. Okay. I'm going to clean my holes right here. Okay, let's put it back on top. Now, I'm not sure if the plumber put, uh, putty over here. So that's how I have my idea. And my battery's going to die. Okay, let's tighten this. I'm going to make it too tight. Okay, what I want to do since I'm down here is I'm going to make sure I clean up and don't have any, uh, water drips or anything leaking down here. So I'm going to clean up. So when I turn on the water, I can find out exactly if I'm, if I'm an easier nut. I have a new clip. Slide it on to say that. Guys, if I'm doing something wrong, just let me know in the comments. Because I didn't bother reading directions. Okay, I'm going to put a tube right here. Looks like it needs to be, like, a little bit right here. Yeah. So I'm going to cut it right here. Okay. Okay. I'll just cut it right here. Just stick it in here. Okay. See what happens.

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