What do you braze AC lines with?
You’ll use a torch for brazing just as for soldering. Because brazing involves higher temperatures than soldering, using an oxygen-acetylene torch is your surest bet because this gets hotter than a MAPP gas or propane torch, although for most small-to-medium jobs (thinner copper piping) a turbo torch should also work.
Can you solder HVAC lines?
Solders are typically considered a plumbing product. But, did you know low-temperature tin/silver solders have higher strength and ductility than typical plumbing solders? This makes them suitable for most residential HVAC connections.
Do you need flux for brazing copper?
Remember that copper to copper brazing does not require a flux. Here are a few common combinations: Using Stay-Brite® Solder – Stay-Clean® Soldering Fluxes.
What brazing material is mainly used for connecting copper to copper?
Air-acetylene – This gas has a flame temperature of around 2700°F (1482°C). This type of brazing requires a cylinder of acetylene gas and incorporates atmosphere air to produce the torch flame. Air-acetylene is primarily used for copper-to-copper, copper-to-brass and copper-to-steel joints.
Do you use flux when brazing AC lines?
When brazing copper to brass or to steel a flux is always required. A flux is also required when using high silver braze alloys like Safety Silv® 45 or 56. Brazing fluxes contain 15 – 35% water so we want to keep excess flux from inside the lines.
What type of braze to use for refrigeration line?
First there are two products you are confusing a bit. The brazing material most often used for refrigeration line is a silver bearing copper alloy brazing rod (usually with a bit of phosphorous). This is the braze most often used and will have a silver content of 5% to 15%, as you mentioned.
What is the best brazing rod for copper lines?
For joining copper lines we usually use brazing rods that are made out of a copper-phosphorous combination. With six percent silver, this type of brazing rod starts to melt at 1,190 °C. When you’re brazing you’re going to need to heat your lines up until they’re basically glowing red.
Can You braze copper tubing to AC?
In some situations brazing will be too hot for the job and you’ll have to solder. For example, if you’re joining copper tubing to an AC unit you’ve got to be careful with your temperature so as not to damage any rubber or nylon bushings that touch the lines.
What is a braze rod?
The braze is what is melted by the torch to join two metals. For joining copper lines we usually use brazing rods that are made out of a copper-phosphorous combination. With six percent silver, this type of brazing rod starts to melt at 1,190 °C. When you’re brazing you’re going to need to heat your lines up until they’re basically glowing red.