Slow drip in water tank ballcock valve

[Mick_Factor]

Hello,

There is a slow drip in the attick water tank. To explain in detail, after use, e.g. flushing the toilet the tank refills quickly. Then the rate slows to a trickle and then an ever slowing drip (maybe 1 drip every 10 - 20 seconds). The thing is this drip could last all night, 12+ hours without any water being used in the house. It doesnt seem to ever shut off. If I depress the ballcock to add extra water into the tank it will then shut off.

The tank is the black plastic kind.

Do I need to change the ballcock and valve?

Regards,
Michael

 

[Newboy]

Just a washer change in the ballvalve

 

[Nige F]

If the noise is driving you mad - tie a piece of string for the water to run down - temporary job but it won't drip

 

[Mick_Factor]

2 great suggestions. Thanks. I wouldnt be half as bothered if it wasnt for the noise.
Ill tie the string and change the valve/ballcock.

 

[Mick_Factor]

* change the washer.

 

[HERTS P&D]

That's the wrong float valve Mick, that is a part 1 the OP would have a part 2 float valve.

http://www.screwfix.com/p/part-2-fl...s&gclid=CIrBsI6C1McCFSoTwwodcFYLWA&kpid=92516

This is what the washer should look like, you would only need one.

http://www.ebay.co.uk/itm/Diaphragm...d-water-x-4-/291245992637?hash=item43cf9d2abd

I would just change the float valve.

Andy

 

[JohnD]

If you don't like tinkering, just fit a new valve. The Pegler Prestex Part 2 is probably the best you can get.
http://www.screwfix.com/p/pegler-prestex-float-valve-part-2/27627
You can buy an inferior valve if you feel you need more practice changing and repairing them. Read both pages of reviews.

If you do like tinkering, fit a new valve, then take the old one apart on the kitchen table at your leisure, clean it up, fit a new cone and washer, and put it next to the tank, in a plastic bag, ready to swap back in 10 or 20 years when it needs doing again.

 

[Mick_Factor]

I replaced the washer. Verdict is out on wether the drip has stopped yet. I havent had time to check a few hours after use.

However now when the water flows through the valve it vibrates/shudders really loud. What is wrong?

 

[Newboy]

water hammer - try turning the stopcock back half a turn

 

[JohnD]

Should have taken my tip.

 

[muggles]

Always easier to just replace the complete valve. I use Fluidmaster Pro75B valves

 

[Mick_Factor]

From the replies it seemed like the easier option was a washer change.

Now I will change the valve and put a metal plate on the outside of the plastic tank (which is currently missing).

Is that a job I can do easily? Is the metal plate easy to install?

 

[bri160356]

Always easier to just replace the complete valve. I use Fluidmaster Pro75B valves

Good recommendation.

I get fed up with noisy float valves;

Recently tried this one; but just a bit too noisy, creaky, groany and takes too long to turn off completely,....but that’s just how they are.



Also this one; ditto.



So I tried this one;.....very quiet, quick fill and shuts off instantly with barely a whisper,...... “Silent Night”....excellent.


There is nothing intrinsically wrong with the ‘traditional’ float valves but if you want a fill that’s as quiet and quick as possible the ‘Fluidmaster’ is very good.