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Grohe Uniset For WC Flushing Cistern


RRP: £253.24

Delivery In:

3 Working Days Approx.

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Shipping: £7.95

Key Features
  • With small maintenance access
  • Sound-insulating EPS module for masonry-in
  • Rail adaptors for modular fixing
  • Low noise (group I acc. to German Noise Specification)
  • Five years warranty against any manufacturing defects
SKU Code: QS-V7981

MFC Code: 38642001

Grohe Uniset 38642001 Details

The Grohe Uniset for WC Flushing Cistern is capable of vertical or horizontal use and comes with support feet for completely secure installation. Created with small maintenance access and rail adapters for modular fixing, this product comes with a fixing device just for ceramic, so you it won't budge once it's fully installed in the bathroom. Featuring low noise operation and insulated against condensation on the outside, this unit comes with an inlet and outlet connecting set with the water supply that comes from the left, right, back or top.

  • Manufacturing code of this product: 38642001.
  • Wall rail with fixing accessories for single or rail installation.
  • Incorporates with 2 WC fixing bolts.
  • Distance of fixing bolts 180/230mm.
  • Fixing device for ceramic.
  • Outlet bend Ø90mm.
  • Adjustable depth.
  • Reducer : Ø90/110mm.
  • Flushing cistern GD 2, 6 - 9 l.
  • Inlet and outlet connecting set.
  • Adjustment ex-factory 6 l and 3 l.
  • Pneumatic discharge valve offering three modes of operation: dual flush or start/stop, or single flush.
  • Water supply from left/right/back or top.
  • Insulated against condensation.
  • 1/2 inch water supply connection including integrated angle valve and push fit, flexible hose union.
  • No tools are required to install the inspection shaft, incl. Protection during the construction phase.
  • For vertical or horizontal use.
  • It comes with support feet.
  • Size [mm]: 470mm x 1110mm [Width x Height].
  • Size [cm]: 47cm x 111cm [Width x Height].
  • Refer to the technical diagram for technical detail.

Technical Specifications

Please note all the measurements are in 'mm'
  • ⤷ Country of Origin
  • : Germany
  • ⤷ Warranty/Guarantee
  • : 5 Years
  • ⤷ Cistern Type
  • : Concealed
  • ⤷ Flush Type
  • : Dual Flush
  • ⤷ Full Flush Volume in litres
  • : 6
  • ⤷ Half Flush Volume in litres
  • : 9
  • ⤷ Cistern Lever Or Button Placement
  • : Front
  • ⤷ Width
  • : 470
  • ⤷ Depth
  • : 130-170
  • ⤷ Height
  • : 1110
  • ⤷ Fixings included
  • : Yes
  • ⤷ Inlet Type
  • : Left, Right, Back Or Top

Total: £180.06 3 Working Days Approx QS Supplies

2 Features Included In This Product Explained

Horizontal Outlet

Horizontal Outlet

When the pan has piping at the back, inside the wall, it is called a horizontal outlet toilet or pan. As the cisterns are concealed or placed against the wall, most plumbing is hidden out of sight.

Vertical Outlet

Vertical Outlet

It is a toilet where the plumbing exits through the floor. Such toilets should be placed a few inches higher than the rest of the floor to compensate for the plumbing.

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Questions & Answers

Submit Your Questions 3 Questions Answered

Have a question about this item? Ask our technical team. We aim to reply within 72 hours.

Stuart Asked :

I forgot to ask if Horizontal Flush plates operate with the uniset cistern, as it states vertical and horizontal use but doesn't state if it's referring to flush plates. I want to purchase the Grohe - QS-V7981 38642001, and I'd like to purchase the QS-V29159 -£74.42 Vertical Flush plate. I noticed the following flush plates, but I'm unsure of the difference apart from the cost. Please advise if the following plates are compatible with the Uniset cistern. QS -V75919 - £184.34? QS- V28547 £104.63?

Answered By QS Team Answered by the QS Technical Team

The flush plates can be either vertical or horizontal in this cistern. This, however, needs to be determined before the tiling, as the inspection box needs to be positioned in the desired orientation. 38805000 would be compatible with this cistern.

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Accepted Answer 1 Thumbs Down 0
Stuart Asked :

Does the Grohe vertical Flush Plate code QS-V57655 Operate with the three flushing modes for the cistern?

Answered By QS Team Answered by the QS Technical Team

It has only two modes, dual flush and single flush.

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sara Asked :

Hello, I was wondering which flush plates are compatible with this cistern? Thanks

Answered By QS Team Answered by the QS Technical Team

We can confirm that any vertical flush plates will work with this cistern, For example, refer this URL : (https://www.qssupplies.co.uk/bathroom-furniture-shower-taps/26141.htm) and (https://www.qssupplies.co.uk/bathroom-furniture-shower-taps/26096.htm)

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