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The installation is made here using PVC fittings such as straight pipe, corner fittings, tee, sleeves, panties, etc.

Tutorial for connecting a sink siphon yourself

The basics before starting

Depending on the assembly, these connections can be female / female or male / female. It is important to respect the recommended diameters.
A small section tube may be connected to a larger section tube, but not vice versa, to prevent gridlock. A minimum slope of 1 to 3 cm per meter is mandatory.
It allows a good flow and avoids the stagnation of wastewater.
If the horizontal part of your pipe is very long, an expansion sleeve will absorb the deformations.

The steps of laying a siphon:

The steps of laying a siphon:

Place the siphon in the sink so that the lengths of the pipes can be precisely measured down to the cast iron run.

Evacuations: connect a siphon: connect

Draw on the wall using a spirit level and a pencil the routing of pipes. Make sure to respect a horizontal slope of 1cm per meter.

Evacuations: connect a siphon: evacuations

After making the traces, then drill the holes required for the installation of the collars. These will keep the pipes clean against the wall.

Evacuations: connect a siphon: siphon

After fitting the dowels, screw the plastic collars into the wall.
Place one every few meters.

Evacuations: connect a siphon: connect

Measure the lengths of pipe needed.

Evacuations: connect a siphon: female

Cut the PVC pipes perpendicularly using a hacksaw and a miter box.

Evacuations: connect a siphon: connect

Chamfer the edge of the pipe with a file so as to allow better penetration of it in the female part of the connection.

Evacuations: connect a siphon: evacuations

Stain the sizing area with a medium grain abrasive belt (120).

Evacuations: connect a siphon: evacuations

Degrease the area to be glued with trichlorethylene.

Evacuations: connect a siphon: siphon

Glue the end of the hose with a brush and a suitable PVC glue.
Be careful to cover the entire surface.
Also glue the inside of the fitting.

Evacuations: connect a siphon: female

Fit the fitting firmly by hand without waiting. As the glue opening time is low, allow to dry for 10 minutes before handling.

Evacuations: connect a siphon: connect

Continue step by step to carry out the evacuation from the pants to the siphon, sticking the necessary connections between the different parts.

Evacuations: connect a siphon: siphon

Make the connection between the pipe and the siphon of the sink. Fit the plastic ring and the conical silicone seal.

Evacuations: connect a siphon: evacuations

Connect the siphon by screwing the ring. The conical seal ensures tightness.

Evacuations: connect a siphon: evacuations

At the sink level, do not forget to insert a flat rubber gasket.

PVC panties

PVC panties

In the case of a PVC drain, glue the drain hose into one of the holes of the reduction pad.

Evacuations: connect a siphon: evacuations

If necessary, use a reduction sleeve.

Cast iron panties

Cast iron panties

At the cast iron panties, drill the silicone pad at the location provided with a cutter...

Evacuation of a sink in cast iron panties

... then push the drain hose out of your sink.
No need to stick.

Prompt cement: for unpadded descent panties

Prompt cement: for unpadded descent panties

If the cast iron or PVC panties of your wastewater outlet do not have an elastomeric silicone pad for the waterproof connection of your PVC pipe, create a strong and waterproof connection yourself.

  • Place in the opening of the pants a piece of cardboard pierced with a circular hole so that penetrates the PVC evacuation.
  • Prepare in a trough the prompt cement and then brush generously the cardboard placed previously.
  • Let dry.


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