Skip to main content

Measure and Mark — Cut the Copper Pipe

Beginner4 hours

Part of project

How to Install an Air Chamber to Prevent Water Hammer · Step 3 of 6

Helpful?

In this video

Determine where to cut the copper pipe by measuring the length needed for the tub spout using a tape measure. Mark the copper pipe where it needs to be cut.

Goal: Mark the Copper Pipe

Used in this video

  • Tape Measure (brand: Craftsman, Tool Type: Measuring tape, Power Source: Manual)Measuring the length for the tub spout
  • MarkerMarking the cut line on the pipe
18.7K views1445 minutes
Home Repair Tutor

644K subscribers

View Channel

FAQs

This project is rated 'beginner.' What's the biggest challenge, and what unexpected costs should I budget for?

The biggest challenge for beginners is often the soldering, which requires a steady hand and practice. Beyond the listed materials, budget for essential safety gear like a fire extinguisher or bucket of water, heat-resistant gloves, and proper eye protection. The total material and basic tool cost could range from $50-$150 if you need to purchase all soldering equipment.

What are the essential safety precautions I must take, especially when using a torch for soldering?

Always have a fire extinguisher or a bucket of water nearby when soldering, and ensure the work area is well-ventilated to avoid inhaling fumes. Wear appropriate eye protection and heat-resistant gloves to prevent burns. Before cutting any pipes, confirm the main water supply is completely off and the pipes are fully drained to prevent unexpected sprays or electrical hazards.

If I'm not comfortable with soldering, are there alternative connection methods for installing the air chamber?

Yes, if soldering isn't your preference, you can use push-fit fittings, like SharkBite, which don't require heat or special tools beyond a pipe cutter. These fittings create a secure, watertight seal by simply pushing the pipe into the fitting. While often more expensive than traditional copper fittings, they offer a beginner-friendly alternative for quick installation.

What's the most common reason a newly installed air chamber might not stop water hammer, and how do I fix it?

The most common reason is an insufficient air cushion or the chamber being too short. Ensure the air chamber is installed vertically with the capped end pointing upwards, allowing air to be trapped effectively. If water hammer returns, the air cushion may have depleted; you can recharge it by shutting off the main water supply and draining the system to refill the chamber with air.

Transcript
Hide

Mill adapter now we need to figure out where to put it right so when you go to put it on and tighten it it's perfect you have to imagine this map threaded I can't do it because I can't get my hands back there right but when this is threaded in there it's going to thread in so this part that I can actually get my tape measure on right now I get my tape measure on that I get my tape measure on there so that means I'm going to hold my tape measure right there because that's that's this Mark this Mark represents the back side of where I can get my tape measure as close to those threads as possible okay so imagine then in my tape in there about right there okay that Mark represents right my P and why that's important cuz now I'm going to look down that and I see that that's 3 and 3/4 can you see that yeah TR to see that okay so 3 and 3/4 really important you so it's three and 3/4 from the back side of where the threads start into that fitting to the face of my finish wall or to the back side of my tub spout which is the same thing right finish wall or back side of my tub spout so 3 and 3/4 3 and

Auto-generated transcript. May contain errors.