Capillary joints are connected to the pipe using solder. There are two types of capillary joints, end feed is where solder is introduced to the end of the joint and capillary action sucks the solder into the fitting. Integral ring fittings come with the correct amount of solder in a ring to make perfect joints.
Selection of capillary joints
Once you have cut the pipe to length and cleaned the end of the pipe with wire wool as shown you can make the joint.
Take care when using a gas torch, especially in confined spaces such as under floors.
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Apply the flame of the torch evenly over the joint until the flux begins to bubble. |
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Once the flux has begun to bubble, touch the mouth of the joint in two or three places with the solder wire, until a ring of solder can be seen all the way around the joint. Allow the joint to cool for a couple of minutes before disturbing it. |
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Flux is applied to the joints to prevent oxidization and provide a clean, grease free surface for the solder. Apply flux sparingly to the inside of the fittings and to the outside of the cleaned pipe, push the pipes up to the stop in the joint twisting them to make sure the flux is spread evenly. |
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To protect the area behind the joint while using a gas torch, place a ceramic tile or plumbers fibreglass mat behind the joint. Apply the flame of the torch evenly over the joint until a bright ring of solder appears at each of the ends. Allow the joint to cool for a couple of minutes before disturbing it. |
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