Toilet Cistern
- Thread starter baz2262
- Start date
Sponsored Links
syphon is donald ducked 
fit a new one
fit a new one
Inside the wide , open bottomed part of a traditional syphon there's a sheet of thin plastic which acts like a piston when it's lifted by a grid underneath it. The plastic sheets wear and split, then you have no seal so no pull.
It's a relative pain in the bum to get to, but then its either very cheap to buy, or you can cut one from a thick plastic bag.
It's possible that the vertical rod which is hopefully attached to the bit you can replace with coathanger referred to by Noodlz, is not connected to the grid at the lower end.
A whole new siphon only costs a few pounds.
It's a relative pain in the bum to get to, but then its either very cheap to buy, or you can cut one from a thick plastic bag.
It's possible that the vertical rod which is hopefully attached to the bit you can replace with coathanger referred to by Noodlz, is not connected to the grid at the lower end.
A whole new siphon only costs a few pounds.
Sponsored Links
If you are really lucky (I love it when it goes this way) you have a split syphon, there is a nurled ring around the part which is central to the cistern, undo this and the half containing the plastic part that wears (diaphragm) will lift up once the flush handle connection has been decoupled.
There are round diaphragms and oblong ones, the replacement oblong ones don't usually fit correctly the two holes for rod and positioning srub are usually in the wrong place, so you have to "Blue Peter" a makeshift one as said above.
If unlucky you haven't got a split syphon, so you have to sponge out last drops of watertake cistern off, whether close coupled or flush pipe, you have to take it apart to get at back nut which holds syphon in place. Once disturbed any rubber sealing washer wants to be renewed as it holds a shape according to the exact position it was last compressed into, you won't be able to get it exactly the same again. It just isn't worth the risk in plumbing to re-use old seals. Water gets people all excited, and start warbling on the phone.
There are round diaphragms and oblong ones, the replacement oblong ones don't usually fit correctly the two holes for rod and positioning srub are usually in the wrong place, so you have to "Blue Peter" a makeshift one as said above.
If unlucky you haven't got a split syphon, so you have to sponge out last drops of watertake cistern off, whether close coupled or flush pipe, you have to take it apart to get at back nut which holds syphon in place. Once disturbed any rubber sealing washer wants to be renewed as it holds a shape according to the exact position it was last compressed into, you won't be able to get it exactly the same again. It just isn't worth the risk in plumbing to re-use old seals. Water gets people all excited, and start warbling on the phone.
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
