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Geberit Sigma 12cm Dual Flush Concealed Cistern UP320


MFC CODE: 109.309.00.5


RRP: £180.52 You Save £83.13 on RRP

3.8 out of 5

4 out of 4 customers rated 75%

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5 Working Days Approx

Shipping: £5.95


Geberit presents a supremely practical and enchantingly allure, Dual Flush WC Cistern. This white finished, concealed cistern can be a splendid addition in bathrooms that prefer to save water. Smart features coupled with outstanding reliability, make this cistern, best value for money. Available at marginal cost from QS Supplies, this concealed cistern, can be all yours, instantly.

+  Read what's included..
Please Note all the measurements are in 'mm'
Colour White
Country of Origin Germany
Material Plastic
Cistern Type Concealed
Flush Type Dual Flush
Full Flush Volume in litres 5.8
Half Flush Volume in litres 3
Cistern Lever Or Button Placement Front
Width 570
Depth 120
Height 635
Fixings included Yes
Inlet Type Centre, Back, Top

INFO / SIZE (mm)

  • Cistern
  • Width: 570 mm
  • Depth: 160 mm
  • Height: 635 mm

Geberit Sigma 109.309.00.5 DETAILS

  • Manufacturing code of this product is 109.309.00.5
  • Size: Width 570mm x Height: Min.635mm - Max. 720mm
  • Comes in white finish
  • Made of plastic
  • Comes with flush bend fitted
  • Dual flush concealed cistern with front actuation
  • Concealed cistern fully insulated against condensation
  • Cistern fulfills standard requirements in accordance with EN 14055, Class II
  • Immediate post flush possible with factory setting
  • Tool-free installation and maintenance work on concealed cistern
  • Water supply connection on the rear or top centre
  • Protection cover box for service opening protects against moisture and dirt
  • Protection box for service opening can be cut to length
  • Flow pressure: 0.1-10 bar
  • Maximum operating temperature of water: 25 °C
  • Flush volume factory setting: 5.8 and 3 l
  • Flush volume small adjustment range: 3-4 l
  • WC Pan, Seat, Basin, Pedestal and Brass-wares shown in image are not included
  • Refer technical drawing for more specification
  • Please refer installation guide PDF from below for more instructions.
  • Application purposes:
  • For floor-standing WCs
  • For drywall construction
  • For installation in room-height installation walls
  • For installation in part- or room-height prewall installations.
  • Scope of delivery:
  • Water supply connection Rp 1/2" - R 1/2", compatible with MF, with integrated angle stop valve and hand wheel
  • Flush bend 90°
  • Protection plug
  • 2x slotted flat irons
  • 2x fixing brackets
  • Fastening for flush bend
  • Flush bend extension Ø 45mm
  • Protection box for service opening
  • Cup for flush volume reduction 4.0 / 2.6 l
  • Fastening material.

Please Note: Must be used with pans designed for low volume flush, Flush valve features settings to enable either a 6 l and 3 l flush or a 4.5 l and 3 l flush, The cistern can be operated with used water (rainwater) provided it is passed through a filter system first.


Total: £97.39 5 Working Days Approx QS Supplies

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Wickford Date: June 13, 2015

Gerberit cistern
Quick efficient ordering and delivery service. Helpful staff. Easy to install.
4 Star

Helpful? Hands Up Hands Down


  • Quality: 5 Stars
  • Value For Money: 4 Stars
  • Style: 4 Stars

Questions & Answers

  Submit Your Questions 5 Questions Asked

Have a question about this item? Ask our tech team. We aim to reply within 72 hours. If you want to know get answers fast, please call us on 0116 251 0051

Alison Asked :
Hi I havent' 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 it’s own. Therefore this will be 111.383.00.5 For 111.383.00.5 -- Refer this url Alternatively you can use Duravit DuraSystem Standard Toilet Frame Refer this url

Was this answer helpful? Yes - No

Natalie Asked :
I see on the data sheet for the Geberit QS-V39530 that the height of the unit once installed is 108cm from the floor. I am wondering if this is a fixed height as I would like our boxing in to be shorter than this. Can the black flush pipe be adjusted to make the unit closer to the pan and therefore reduce the overall floor the top of boxing in height?

Answered By QS Team :
Sorry for the delay responding, the flush pipe to be reduced by 8.5cm as per technical drawing of the cistern. You Can Download the Product details and Technical drawing PDF from the link below.

Was this answer helpful? Yes - No

Stephanie Asked :
Hi, can this be used with wall hung toilets or just back to wall?

Answered By QS Team :
Please Send the MFC/QS Code of Product to wish to use with Sigma 12cm UP320. Looking at the line drawing of the product we can tell you the compatibility status.

Was this answer helpful? Yes - No

mary Asked :
Can I use Geberit sigma concealed cistern 12cm 9.0 UP320 109.300.5 with Phoenix Megan back to wall pan?

Answered By QS Team :
The Sigma cistern is compatible with this back to wall pan.

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Alan Asked :
I have several of these units installed at place of work and one of the cistern water continually flows how can i adjust this

Answered By QS Team :

There can be two main reasons for water to be running into your WC, both of these problems can usually be determined with on simple test and remedied by serving the correct valve or seal. You can watch the video link here: https://www.youtube.com/watch?v=9D4Fhcq8PLo

Water isolation test:

  • Turn off the supply of water to your WC, if you have a concealed cistern there should be an internal isolation tap inside your cistern which only cuts off the water to the toilet.
  • Leave for 15-20 minutes and check to see if water is still running into the pan.

If water still runs into pan:
Water is escaping underneath the flush valve even though the valve is closed.

  • It is most likely that the flush valve seal has become compromised, remove the flush valve (the valve in the centre of the cistern) and check the bottom for the seal.
  • If the seal has perished cleaned, replace with product code: 816.418.00.1
  • Check that the basket seal is clean and re-seat the basket

If the water stops running into the pan:
The cistern does not know when to stop filling, so it fills up too much and the water trickles over the overflow pipe.

  • It is most likely that the fill valve seal has become compromised, remove the fill valve (the valve at the side of the cistern) and check the blue arm for the seal inside.
  • If the seal cannot cleaned, replace with the correct product code for a side fill valve: 240.771.00.1

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