Sink – water and waste connections

Watch the below video to find out how to prepare your water supply and water waste for your sink.


If you’re planning to include a sink within your outdoor kitchen, we often get asked questions about the water supply and waste pipe.

There are 3 overall steps:

Step 1 – Arrange a plumber to get the pipes (feed and waste) into position. More information on the position shortly.

Step 2 – Your Grillo kitchen is installed, sink and tap fixed to the worktop

Step 3 – Your plumber does the final pipe connections inside the kitchen unit.

When you look inside the cabinet you will see the top compartment, and where the sink trap and pipes go.

There are 3 ways in which you can bring the pipework through the cabinet:

Either through the rear fascia – there is this handy little section that can be cut out for the services to run.

Alternatively, if you don’t want the pipes to be seen through the rear, you can take them up through the base.

The third option is if your kitchen is going to be installed up against a wall, you can actually run the pipes along the wall to this area and the kitchen installers can leave a rear fascia panel off the cabinet, so you can connect into the sink unit that way.

After install, the waste trap and the tap tails are fitted to the sink but left loose for a plumber to do the final connection.

For sizes, the Waste pipe will fit onto a standard 32mm compression fitting and the tap tails supplied with your tap can fit onto a standard 15mm isolation valve.

As mentioned regarding the position. The sink can go onto the centre of any of these 1200 modules. The pipes need to be brought to the correct position on the chosen module.

In terms of the positioning of the pipes – you are aiming for the centre of the cabinet, which is 1200mm wide. If you’re bringing the pipes up under the floor, you need to position 100mm in from the back of the kitchen as shown here.

Sink Services

If you are bringing the pipes through the back of the kitchen, then position them to the centre of the cabinet, and ideally use Flexi pipes. The kitchen installers can just pull the pipes through the relevant slots, and leave them ready for the plumber to connect.

Sink Services

So just to recap on the overall process:

  1. Your plumber the pipes into position
  2. The kitchen is installed
  3. Your plumber does the final connections

If you have any further questions, please email or call us.

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