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PREN 12050-3

2012 Edition, September 2012

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Superseded By: BS EN 12050-3

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W/D S/S BY BS EN 12050-3
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Description / Abstract:

This European Standard applies to lifting plants for limited applications for wastewater containing or not containing faecal matter and located below flood level.

NOTE Limited application means that the number of users is small and the plant is located in the same room as the sanitary appliance(s) served by it1) which are installed in accordance with EN 12056-1 and the layout and calculation are in accordance with EN 12056-4.

Lifting plants for limited applications for wastewater containing faecal matter are those, where there is another WC available above flood level, and the plants serve no more than a single WC to which it is directly connected (at a distance of max. 0,5 m) and one wash-hand basin, one shower and one bidet provided no other sanitary appliance is directly or indirectly connected.

Lifting plants for limited applications for faecal free wastewater are those where a maximum of one hand wash basin or kitchen sink plus one further appliance such as a bathtub or a washing machine or a shower or a dish washer are connected. No other sanitary appliance shall be directly or indirectly connected.

This part of this standard contains general requirements, basic construction and testing principles, together with information on materials and conformity evaluation. Construction and testing requirements for non-return valves used in wastewater lifting plants for limited applications are given in EN 12050-4.

This standard does not apply for Lifting plants for limited applications for wastewater containing faecal matter where WC flushing is carried out by pressure flushing devices.

1) The installation of a faecal lifting plant for limited applications above flood level is normally not allowed but limited to exceptional cases described in EN 12056-1; lifting plants above flood level are not subject to this standard.