What do they call this?

Inlet valve Tosh.. Looks like a bottom entry inlet valve too. (does it enter the cistern via a hole in the bottom of the cistern??)

 

What a silly place to put an overflow pipe!

Mr. HandyAndy - Really

 

Before you go a buy a new one, double check the ballcock isn't leaking and holding water, it may be just holding enough so it doesn't raise enough to shut the valve off, had this on my mums water cylinder, the ballcock was only a year old!!

 

Yep. Our hosts sell bottom entry inlet valves (here) http://www.screwfix.com/p/bottom-entry-toilet-cistern-ball-valve/52836 Or possibly this one http://www.screwfix.com/p/fluidmaster-bottom-entry-fill-valve-uk/84007

Fairly straightforward to change (warning, you will get wet).

PS , you may need to buy a new ballcock too.

 

Either turn the mains off or (ideally) there should be a stop valve on the pipework leading to the cistern. Flush the toilet (there will be a small amount left in the cistern. This is where you get wet) Undo the connector on the bottom of the inlet valve, then undo the nut that holds the inlet valve to the cistern. Remove the old inlet valve, Put the new one in. Screw and tighten the nut that holds the new inlet vale to the cistern (make sure you've put the rubber washers supplied with the new one, in the right places) Connect the water supply back up, turn on the water, then adjust the valve so it stops filling at the correct level. Job done, open a can and relax.

 

Remove any sitting water after you have flushed with a sponge.

 

Or even

 

When you've flushed and the cistern is almost empty, chuck a large towel in there for a couple of minutes, soak up until none left. No getting wet!

Mr. HandyAndy - Really

 

Yes. It doesn't have a sealed 'ball', so doesn't suffer from that issue. Also has the benefit of shutting off pretty much instantly once the water level reaches the correct level - no more of that slooooooooowww shutting down with a wee trickle at t'end...

 

Very good!

 

As DA says the FluidMaster is a direct replacement (cost a bit more though) but the fitting instructions are the same.

 

No worries, our invoices are in the post.

 

Sf used to do some with brass threads rather than the plastic ones.

 

I think they still do JG.