Skip to main content
Stesso

Installing a New T&P Drain Line

14:30
16:59
1.7K views

At 14:30 in

3 Water Heater Fixes Every Homeowner Should Know

Watch on YouTube

What happens here

The final major step is to install a new drain line from the temperature and pressure (T&P) relief valve to a floor drain. The presenter highlights CPVC pipe as a highly cost-effective and appropriate alternative to more expensive copper piping for this application. He accurately measures the required length of CPVC pipe using a measuring tape and then cleanly cuts it with a pipe cutter. To ensure better fitting and joint integrity, the cut ends of the pipe are chamfered using a specialized tool. Oatey Flowguard Gold yellow one-step CPVC cement is then applied to join the pipe segments and fittings (such as 90-degree elbows), creating a continuous path for the T&P discharge. The assembled drain line is securely fastened to the side of the water heater using metal pipe clamps with screws and directed to the existing floor drain, ensuring proper drainage in case the T&P valve activates.

Goal: Create a safe and compliant drain for the T&P relief valve.

Tools and materials

  • Chamfering Tool — Smoothing the edges of cut pipe for better fitting
  • Cordless Drill Milwaukee — Installing pipe clamps
  • CPVC Fittings — Connecting CPVC pipe segments (e.g., 90-degree elbows)
  • CPVC Pipe — Constructing the T&P drain line
  • Measuring Tape — Measuring the length of pipe needed
  • Metal Pipe Clamps — Securing the drain line to the water heater
  • Pipe Cutter — Cutting the CPVC pipe
  • Oatey Flowguard Gold CPVC Cement Oatey — Joining CPVC pipe and fittings

What they say

Hide

going to do is we are going to pipe the TMP right here. We're going to pipe it over to the drain. Only thing I like using CPVC for is running these drains. Right? A very good inexpensive way to run your TMP drain is just so much more cost-effective these days than copper. Grab our pliers wrench here, give this a couple spins counterclockwise, and it's going to come right out. Got a 3/4 in CPVC adapter right here. Just going to hit it with some Teflon. Said with the white stuff, we'll go five to seven wraps. >> You don't have to, but if you chamfer this it just it goes in the fittings better. It's nice. I got some FlowGuard Gold yellow CPVC cement. It's all-in-one. Oh, super shallow. See it right there. It's going to keep this whole thing nice and braced up. Going right there to the drain. Perfect.

Auto-generated from the video audio.