If you want to connect water pipes and taps all by yourself, you’ll discover that this is often easier than you thought at first. Of course it would be useful to know in advance which pipes are going to be used and when they are going to be used as well as that you should take the right diameters into account. On this page you’ll find already some basic information, which is going to put you on the right track for quite a way.


The supply and drain of water

Tap water and flushing water for the toilet are directly or indirectly daily means of consummation and as a consequence have to meet severe requirements. That’s the reason why pipes, sealing means and other materials have to be converted in such a way, that no health danger (risks) could occur. Therefore it’s important to only use materials which has been allowed to be used as drinking water. In this respect you should watch the KIWI hallmark closely.


The materials for the drain pipes and the waterworks

Nowadays waterworks consist of brass or synthetic material. In case of synthetic pipes it’s important to be aware of the fact that they are sufficiently heat-proof. Nowadays all drain pipes exist of break-proof, heat and shape proof synthetics. Curves in the water pipes you’ll usually make with solder or compression fittings. Discharge pipes with bended connectors and branches


Different diameters

For every material there is another measure (size). In case of pipes and sockets with screw thread, we use inches, whereas the synthetic pipe is indicated by inner (inside) diameter as well as by millimetres. Outside diameter and wall thickness are applied for the brass pipe. The different (various) dimensions are corresponding with each other as follows:

The pipe thicknesses that are used most frequently in case of drinking water pipes are: 12 x 1, 15 x 1, 22 x 1 and 28 x 1.5 (outside diameter x wall thickness, measured in mm). The same measures also apply to synthetic pipes.


The measures

From the water meter up to the tap, the diameter of the water pipes gradually declines. Standpipes, which provide water to every storey of a house, always have a diameter measuring at least 20 mm. This corresponds to 22 x 1. On the different floors themselves, pipes with a diameter measuring 15 mm are used. This equals 15 x 1. It’s important for you to get information at the hardware store about the way you should carry out your plans based on your specific situation. In case of draining (used) water, there are other measures to be applied. For instance fountains, washbasins and bidets are connected to a 40 mm waste pipe. For sinks, dishwashing machines, automatic washing machines, bathtubs or showers, you’ll have to use a 50 mm waste pipe. For the toilet drainage as well as for discharge pipe, you’ll have to use a 110 mm waste pipe. If more than three pipes are joined together or if the pipe makes several curves or if the vertical movement exceeds 50 cm, it should be sensible to pick a pipe with an even larger diameter.


Soft soldering, hard soldering and unipipe

Brass pipes are being soldered together with tin, which is called soft soldering. If the pipe bindings are larger than 25 mm, you’ll have to apply the hard soldering method. In case of hard soldering you’ll have to use a bit of an alloy consisting of brass and tin to solder the pipes together. Normally these measures are not being used inside the house, so we’ll leave the applicable processing of the last mentioned method out of account. In case of even larger diameters we advise you to ask NOVO for advice. Apart from that it’s a fact that nowadays only a brass pipe is being used when it’s really necessary. At present most of the time we are employing the unipipe method, which has proved being a better and more durable alternative for brass. Moreover the coupling is a compression fitting, which can quickly and easily be permanently closed without any leakage by the squeeze of a pair of pliers. One of the best innovations in plumber-country since the nineties!

Installing waterworks all by yourself

You’re allowed to do all the waterworks inside your house all by yourself, except installing the connection to the public mains and sewers. To make this happen, you should get in touch with NOVO.




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