The valve in my toilet cistern trickles for a long time before shutting of 
flow completely.It is one of the plastic type,my question is ,can it be 
replaced by a metal one ? and is the changeover a straightforward job.also
when flushing toilet there is sometimes a strange noise,wife describes it as 
a growl,anybody got ideas on what could cause this . Does not appear to be 
from the cistern.Thanks for any help with this

Tab

"Tab"  wrote in message
news:d9s6sc$6ea$1@nwrdmz02.dmz.ncs.ea.ibs-infra.bt.com...

> The valve in my toilet cistern trickles for a long time before shutting of
> flow completely.It is one of the plastic type,my question is ,can it be
> replaced by a metal one ? and is the changeover a straightforward job.also
> when flushing toilet there is sometimes a strange noise,wife describes it
as
> a growl,anybody got ideas on what could cause this . Does not appear to be
> from the cistern.Thanks for any help with this
>
> Tab
>

Yes it can be replaced. You have to make sure that the one you fit is low or
high pressure according to which the original was. If it gushes big time
into the cistern, it's probably high pressure i.e. fed from the rising main,
if it trickles steadily it's probably low pressure, fed from the cistern in
the loft. You may find that when you buy your stopcock it comes with a spare
nozzle as well as the one inside. Small hole is for high pressure, large for
low pressure. If you have to change it, you do so by removing the brass
split pin and unscrewing the end cap.

The changeover is fairly simple and needs only basic tools. Shut off the
water supply, flush the loo, wait for water to stop running into the
cistern, this means the pipe is empty. Undo the pipe which feeds it, this
will lose some water but not a lot, be ready to mop up. Undo the nut
securing the ballcock to the cistern using a spanner each side. remove
ballcock and fit new one. Refit pipe and check for leaks. Adjust float until
water level is correct. there should be a line in the cistern indicating the
correct level, but if not, set it at just below the overflow outlet. You may
have adjustment on the ballcock or it may have to be bent to suit. Do all
the above with the seat down, then you won't drop a spanner down the pan and
break it.

I don't know about your growling noise though. could it be the gurgling as
the flush ends and the siphon effect breaks down? If so it's not a problem.

HTH

Steve

"shazzbat"  wrote in message 
news:d9sahd$b6q$1@news8.svr.pol.co.uk...

>
> "Tab"  wrote in message
> news:d9s6sc$6ea$1@nwrdmz02.dmz.ncs.ea.ibs-infra.bt.com...
>> The valve in my toilet cistern trickles for a long time before shutting 
>> of
>> flow completely.It is one of the plastic type,my question is ,can it be
>> replaced by a metal one ? and is the changeover a straightforward 
>> job.also
>> when flushing toilet there is sometimes a strange noise,wife describes it
> as
>> a growl,anybody got ideas on what could cause this . Does not appear to 
>> be
>> from the cistern.Thanks for any help with this
>>
>> Tab
>>
> Yes it can be replaced. You have to make sure that the one you fit is low 
> or
> high pressure according to which the original was. If it gushes big time
> into the cistern, it's probably high pressure i.e. fed from the rising 
> main,
> if it trickles steadily it's probably low pressure, fed from the cistern 
> in
> the loft. You may find that when you buy your stopcock it comes with a 
> spare
> nozzle as well as the one inside. Small hole is for high pressure, large 
> for
> low pressure. If you have to change it, you do so by removing the brass
> split pin and unscrewing the end cap.
>
> The changeover is fairly simple and needs only basic tools. Shut off the
> water supply, flush the loo, wait for water to stop running into the
> cistern, this means the pipe is empty. Undo the pipe which feeds it, this
> will lose some water but not a lot, be ready to mop up. Undo the nut
> securing the ballcock to the cistern using a spanner each side. remove
> ballcock and fit new one. Refit pipe and check for leaks. Adjust float 
> until
> water level is correct. there should be a line in the cistern indicating 
> the
> correct level, but if not, set it at just below the overflow outlet. You 
> may
> have adjustment on the ballcock or it may have to be bent to suit. Do all
> the above with the seat down, then you won't drop a spanner down the pan 
> and
> break it.
>
> I don't know about your growling noise though. could it be the gurgling as
> the flush ends and the siphon effect breaks down? If so it's not a 
> problem.
>
> HTH
>
> Steve
>
>Thanks Steve.I will have a go at the job with confidence tomorrow after 
>your very clear advice.I am fortunate that there is a valve on the feed in 
>to the cistern and I am pretty sure that it is high pressure feed but I can 
>check that before I start. Thanks again


Tab

"Tab"  wrote in message 
news:d9s6sc$6ea$1@nwrdmz02.dmz.ncs.ea.ibs-infra.bt.com...

> The valve in my toilet cistern trickles for a long time before shutting of 
> flow completely.It is one of the plastic type,my question is ,can it be 
> replaced by a metal one ? and is the changeover a straightforward job.also
> when flushing toilet there is sometimes a strange noise,wife describes it 
> as a growl,anybody got ideas on what could cause this . Does not appear to 
> be from the cistern.Thanks for any help with this
>
> Tab
>My cistern overflow is of the type that flows into the pan is there any 
>chance that the 'growl 'would have something to do with that.