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Dual flush modification kit for loo

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Old Salt | 08:55 Thu 01st Mar 2012 | DIY
8 Answers
I have a medium-size, slimish, cistern on my loo. Therefore, not much free space is available. For some time I have been thinking about installing a modification kit that will give me dual-flush capability.

Has anyone seen a kit that works properly? I have done some research and the claims are fantastic, and costs range from £12.00 to nearly a hundred.

Sure could use some advice and suggestions

Thanks for any responses

Old Salt

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I'd advise caution if you've not done plumbing fixes before - these kits are never as straightforward as they make out, and can be very dependent on the exact shape of your cistern lid or body (wherever the push-button is meant to be fixed).
I'm not clear on how installing dual-flush will save you space - can you explain more? Or is it that the flush handle is on the side and is tight for space?
If you wish to save water, you could try putting a house brick in the cistern, if this can be done without causing interference with the flushing mechanism.
I used a couple of these last week Salty.....................

http://www.toolstation.com/shop/p37186
I had to replace mine last week and used one similar to what The Builder linked to. Easy to fit and works a treat. Fitted slim inlet valve as well to give me more room and silent fill.
I always laugh when people suggest putting a house brick in. There is simple adjustment provided to adjust the water level.

The danger though of reducing the level though is that people then log the bog.
Question Author
Thanks very much everybody.

I don't think I will take the job on. I have a 'general maintenance' man who I will get to come over and see what can be done...................and give me a quote.

There is not enough room for a brick, even if I wanted to use one. It is my opinion, that there probably won't be much saving in a dual flush.

But, I will keep an open mind

OS
Since 1993, the maximum water consumption of a single (long flush) loo has been 7.5 litres. This is when the slimline units came in. Not sure what consumption a double flush unti has on short flush - but I'm guessing at 5 litres.
That should enable you to work out how much water you could save, as water/sewage removal (assuming you are connected to the sewer system as well) effectively costs £3 per 1000 litres via the water meter.
So that to me sounds like a saving of 0.8p every time you use a short flush over a long flush.
Now all you need is an estimate of the number of short flushes per annum (or even per anum?) - I'll leave that calculation to you for fear of getting it wrong and offending you.
Question Author
Sounds like a plan buildersmate,

I'll discuss it with my 'maintenance man' and see what we can determine.

Thanks for the very good information and advice

OS

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