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In renovation, different times coexist. In plumbing, cast iron, fiber cement (now forbidden), lead (also prohibited), steel, copper and, today, plastic have been used in turn to produce discharge. It is sometimes necessary to connect two pipes with different materials.

Prepare a copper-PVC junction

For a PVC drain to be connected to an existing copper network, a special fitting is needed because the copper is soldered, while the plastic sticks.

Remove the rubber seal

Remove the rubber seal

On a PVC pipe, the rubber seal seals. It must be removed to mount the fitting, as it is welded to the copper vent by soft tin solder.

Run soft solder

Run soft solder

Soft soldering is performed with a gas torch.
First put a thin layer of tin on the fitting: it is tinning.
Then heat the fitting to the flame until it changes color.

Melt tin

Melt tin

Spread the flame away and immediately present the tin wire. If the copper is hot enough, tin melts instantly. Place the filler metal all around the fitting.

Wipe the tin

Wipe the tin

Immediately wipe off the tin with a thick dry cloth to obtain a thin and even layer, without extra thickness.
Protect your hands with gloves to prevent burns.


Video Instruction: How to use push fit pipe | push fit fittings