Mezonic Oslo
Mezonic Oslo
Mezonic Porsgrunn
Grepi Plast
Pavels Innovation
+47 476 60 111 Monday - Friday 09:00 - 17:00 Akersgt 7, 0158 Oslo
+47 476 60 111 Monday - Friday 09:00 - 17:00 Hydrovegen 19, 3933 Porsgrunn
+47 476 60 111 Monday - Friday 09:00 - 17:00 Hydrovegen 19, 3933 Porsgrunn
+47 476 60 111 Monday - Friday 09:00 - 17:00 Hydrovegen 19, 3933 Porsgrunn

New requirements for corrosion safety and drainage capacity

SINTEF Byggforsk has new requirements for pipe-in-pipe systems for water supply in homes. The drainage capacity in a manifold cabinet should be at least 0.4 l/s and it should be corrosive.

CustomerArmaturjonsson - Wikipedia
BackgroundArmaturjonsson has operated in the Norwegian market since 1970, and is one of the leading companies in Norway with products and systems for distribution of all types of water, heat and cooling indoors in residential and commercial buildings, as well as installation materials for the plumbing industry.


In 2015, Grepi Plast started the development of a manifold cabinet that would be adapted to new requirements in the industry. Grepi Plast presented a draft of the manifold cabinet to Armaturjonsson, and they wanted them to develop this further.


The services we assisted with: Product development, prototypes and plastic production.


The project developed into a collaborative project between the three parties Armaturjonsson, Grepi Plast and Pavels Innovation, and all participated in the product development of the plastic manifold cabinet. Grepi Plast is material experts and could assist Armaturjonsson with new insights and a better alternative to material to meet the new requirements for corrosion safety and drainage capacity. Since plastic does not corrode, it is a good material to meet the new requirements for corrosion safety. The advantage of making the plastic cabinet is that there are no welds or exhausted transitions, making it safe to have in houses.


Pavels Innovation contributed to the product design and prototypes. The manifold cabinet was developed with an incline in the bottom that allows any leakage to more easily flow to the drain. It was adapted to Armaturjonsson's existing implementations and distributors, as well as following the new requirements in corrosion safety and drainage capacity. For example, a larger drain of 40 mm was specified to meet the new requirements.


Grepi Plast facilitated serial production of the manifold cabinet at their factory in Skien. They have also been responsible for the assembly and are still increasing the capacity of this.


The development of Sanipex Manifold Cabinet was finished at the end of 2017. Today it is currently distributed by all leading Norwegian pipe wholesalers such as Ahlsell Norway AS, Heidenreich AS, Brødrene Dahl AS and Onninen. Manifold cabinet in plastic are more applicable than ever before, because of the new industry requirements for corrosion safety and drainage capacity.


It is currently part of the pipe-in-pipe system JRG Sanipex from Armaturjonsson, which stands for the distribution of tap water to bathrooms, kitchen, laundry room etc. This drain water system has been on the market for over 25 years and is one of the most commonly used pipe-in-pipe system. Systems have been tested and approved according to the Nordtest method, where it is, among other things, SINTEF Byggforsk that has tested and issued the approval.


The development of a plastic manifold cabinet has given the fitter a more mounting-friendly pipe-in-pipe cabinet and with a great advantage that it provides a smaller weight load for the fitter. The Sanipex Manifold Cabinet is clearly supplied for installation with door and frame, all necessary implementations, siclamps, documentation, course overview and marking system.


Useful insights have emerged in relation to production from Norner AS, where we can see that plastic benefits are more environmentally friendly to produce. It takes five times as much energy to produce 1 kg of steel and energy consumption by producing aluminum is 15 times as high. We are very proud to contribute a more environmentally friendly alternative to market benefits.

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