The water level is only a smidgin below the overflow
Can you increase it,
It is a dual flush syphon and seems to start oK with either momentary
actuation of the lever (1 gallon flush) or holding down the lever (2
There is probably a slight bias to washing down on one side
Not sure. The pipe was the one supplied with the cistern, one piece with
a swept bend ready formed. It is all boxed in so difficult to check
if a larger size would be admissible. Whilsty I might be able to bodge
in a lerger pip into the back of the pan, I suspect that the outlet of
the cistern will be designed for a single size pipe.
One other possibility comes to mind. The Pan outlet is horizontal and
runs into a pipe also horizontal (2.5 degree fall actually) about 7 feet
long before joining a conventional vertical stack. Normally, the pan
would be much closer to the stack. So, does the effect of a 'plug' of
water falling down the stack contribute to the flush by suction??
Thanks for the suggestions JB
The domestic authorities have ordered that the floor be tiled and the
place decorated so I'll take out the bog and the bidet (posh footbath!!)
and investigate. Someone else mentioned scale. We have very hard water
so I'll get some acid to descale under the rim which may have some
blocked jets hence the slight sideways bias during the flush.
I have also just timed a flush. It takes a full 20 seconds for a 2
gallon flush. Is this a long time?
Perhaps we could have a survey amongst DIY groupers?? How long is your
To Reply directly to my mailbox, change myisp to ntlworld
I'd never though of timing this, but out of idle curiosity, following your
question, I did so.
All toilets 2 gallon
1) pipe connected, 6-7 seconds(cheap)(syphon replaced)
2) Pipe connected, 6-7 seconds(cheap)(syphon replaced)( two stage flush)
3) Close coupled, 6-7 seconds (more expensive)
4) Close coupled, 10 seconds(most expensive!)
Thanks for taking the trouble to take the timings ( 4 bogs - that's posh for
So my flush is typically 3 times as long. On the basis that the momentum is
proportional to velocity squared, maybe I have a ninth of the flushing
Seems like this is the area forme to attack
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