Geberit Sigma UP320 12cm Dual Flush Concealed Cistern 3 and 5.8 Litres - 570 x 1080mm

David Asked :

I am interested in the Geberit 12cm Sigma (UP320) but am restricted for depth space at 12cm, maybe 12.5 max. The dimensions show the depth as 12cm, but it looks like this is only at the top section. Is the cistern wider at the bottom? In other words, could it be fitted in a depth of 12cm?

Answered By QS Team

109.309.00.5 The cistern is the same width from top to bottom; it's usually the waste outlet that needs the additional depth if it goes into the floor; if it goes straight out the back, then it does not require the additional depth.

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Parmy Asked :

Can this cistern be used with the following flush plate? Thanks Geberit Sigma30 246 x 164mm Dual Flush Plate QS-V6801 MFC Code: 115.883.KJ.1.

Answered By QS Team

The cistern and flush plate are compatible.

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Saurabh Asked :

Would you please let me know the location of the feed pipe connector on the Cistern?

Answered By QS Team

Refer to the attached specification sheet for the information required.

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Lucy Asked :

Geberit has advised me to contact the supplier we intend to use to find which concealed cistern is most suitable for us. We are looking to save as much space as possible, a pneumatic flush and access to the workings through the flush panel (saves the worry it will be in a frame and tiled) and using a back to wall pan rather than wall hung. I'm not sure which cistern would be most suitable. Would you be able to advise, please? I hope to get all the necessary fittings before the builder is here; we haven't chosen a plan yet as it depends on the cistern depth. The builder usually uses a different brand, and I want to make sure he doesn't encounter any problem, so I'm doing the leg work :) Many thanks for any advice you can offer :)

Answered By QS Team

Geberit does not make a cistern in a frame to suit the requirements you have mentioned. All our frames and cisterns are designed to work with wall-hung toilets. The only cistern we have for floor-mounted toilets is for use in furniture only and not mounted to a brick wall. In this matter, we are unable to assist.

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Khush Asked :

Is this system compatible with all RAK toilets? I have one installed, and the flush is so powerful that water splashes out on the initial burst. How can I slow this down?

Answered By QS Team

The Sigma cistern (109.309.00.5) is compatible with RAK and other floor standing back to wall toilets. Depending on the answer you can adjust the flash accordingly to either 6lt or 4.5lt flush volume by turning the flush valve inside the cistern.

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Phillip Asked :

Hi Will this fit into cabinet depth of 320mm Regards Phil

Answered By QS Team

Download Product DataSheet PDF. From PDF refer to the technical drawing. The portion in red circle is the maximum distance from the wall to the front of the cistern is 205mm. But if you want you can put batons behind the wall fixings to bring the cistern out further. You must put support, bracket or a block of wood fixed to the wall to support the flush pipe.

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Alison Asked :

Hi, I haven't' received a response to my query from a couple of days ago - please could you respond. I am asking whether this wall hung pan QS-V43395 is compatible with this cistern QS-V39530

Answered By QS Team

For Duravit Darling New pan we recommend a frame and cistern and not just the cistern on its own. Therefore this will be 111.383.00.5 For 111.383.00.5 -- Refer this url Alternatively, you can use the Duravit DuraSystem Standard Toilet Frame.

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