QA

How To Solder Copper Water Pipes

What kind of solder do you use for copper pipes?

Types of Solder Buy lead-free solder that’s designed for copper water pipes; you’ll find it in the plumbing section of the store. Solder with lead is still available, but the lead can leach into your water supply, so don’t use it.

What kind of solder should be used on water pipes?

Lead-free plumbing solders are required for use on pipes carrying drinking water, also known as potable water lines. Leaded solders are available for applications that will not come into contact with potable water, such as sheet metal repair or copper drain lines.

Can you solder copper with water in the line?

Don’t try to solder pipes with water in them. Soldering a joint in pipes that contain even tiny amounts of water is nearly impossible. Most of the heat from the torch goes into turning the water to steam, so the copper won’t get hot enough to melt the solder. Stop the trickle of water with a pipe plug.

How do you solder perfectly?

Step 1: Begin by making sure the tip is attached to the iron and screwed tightly in place. Step 2: Turn on your soldering iron and let it heat up. If you have a soldering station with an adjustable temp control, set it to 400′ C/ 752′ F. Step 3: Wipe the tip of the soldering iron on a damp wet sponge to clean it.

Why does my solder not stick to copper pipe?

If the solder is beading up or running down the pipe, you have a dirty fitting. Just as Vic says use clean fine grit sandpaper or emery cloth. Clean both surfaces, spread flux as soon as you clean them. Also clean and flux joint after you fit them together.

Do you have to use flux when soldering copper pipes?

Flux prevents the copper from oxidizing as you heat the copper with the torch. You can solder without flux, but it is really difficult! Flux is applied to both the pipe and the fitting with a handy miniature paint brush. You do not need massive amounts to be effective.

Can you use lead solder on copper?

Under the Water Fittings Regulations and Byelaws, the use of lead solder for jointing copper pipes is prohibited in plumbing systems which supply water for drinking, cooking or bathing. Solder containing lead can only be used on water installations not used for drinking, such as closed circuit central heating systems.

Can I use silver solder for plumbing?

Oatey® Silver Lead Free Plumbing Wire Solder is a silver bearing wire solder designed for plumbing and potable water line applications. Safe Flo Silver Lead Free Solder is also effective on stainless steel, brass alloys, chrome alloys, galvanized steel and cast iron piping.

Can you use electrical solder for plumbing?

Typically, electrical solder contains rosin core flux; plumbing solder uses an acid-based flux. So it’s not a good idea to use plumbing solder for electrical connections because the acid in the flux can damage the wiring and lead to connection failure.

Can I use acid core solder for plumbing?

Acid core is NEVER used for electical connections. They REQUIRE “rosin core”, otherwise they will corrode and lose conductivity. You cannot use ANY core solder to make copper pipe connections. If it is just a small can of flux, toss it and buy a new one when you need to make some joints.

How long after soldering can I turn water on?

If you followed these instructions, the joint is likely very tight. The only good way to test is to put pressure on the joint (turn on the water to the house). Be sure to wait until the solder has cooled (2-3 minutes) before pressurizing the line to avoid the solder cracking due to a quick change in temperature.

How can you tell if a solder joint is good?

A good solder joint should have an even band of solder showing all the way around. If you see an area that looks as if it needs more solder, brush a little flux onto the joint. If the joint is still warm, the flux will melt and flow into the void.

What are the easiest steps to solder?

To solder, heat the connection with the tip of the soldering iron for a few seconds, then apply the solder. Heat the connection, not the solder. Hold the soldering iron like a pen, near the base of the handle. Both parts that are being soldered have to be hot to form a good connection.

What are the six simple steps of soldering?

How to Solder Perfectly! Step 1: What You’ll Need. A 20-40 Watt Soldering iron or a Mini Soldering Station. Step 2: Tinning. Before Soldering you should always Tin the tip of your Solder bit. Step 3: Soldering Wires. Step 4: Soldering on PCB’s. Step 5: Cleaning the Flux. Step 6: Soldering Tips!.

What would causes solder not to stick?

A classic reason solder won’t stick to something is because you’re not getting it hot enough. My interns come to me with this problem all the time. Make sure the tip of the iron is nice and shiny. Touch some solder on it, and it should melt almost instantly.

Does flux help solder stick?

Flux removes oxidation from metals, and it’s crucial because solder won’t stick to oxidized metals, and metals oxidize very quickly at soldering temperatures.

What temperature should I solder at?

Make sure the surfaces to be soldered are clean. Turn on the soldering iron and set temperature above the melting point of your solder. 600°- 650°F (316°- 343°C) is a good place to start for lead-based solder and 650°- 700°F (343°- 371°C) for lead-free solder.