Our cold water tank has started overflowing, so this morning, up in the
loft, water off, partially drained cold tank, removed end cap from
valve, removed split pin, wiggled the float arm out and removed the
slider thingy which has a rubber washer in the end. The washer looks to
be extremely worn, but how do I get it out of the slider? More to the
point, how do I get a new one in? Once out, is it just a rubber disc?

Thanks.
--
Graeme

Mine is, but the real issue last time was the scale build up in the valve
causing it to not close correctly and leak.
Brian

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Our cold water tank has started overflowing, so this morning, up in the
loft, water off, partially drained cold tank, removed end cap from valve,
removed split pin, wiggled the float arm out and removed the slider thingy
which has a rubber washer in the end. The washer looks to be extremely
worn, but how do I get it out of the slider? More to the point, how do I
get a new one in? Once out, is it just a rubber disc?

Thanks.
--
Graeme

On 20/08/2018 11:43, Brian Gaff wrote:
Mine is, but the real issue last time was the scale build up in the valve
causing it to not close correctly and leak.
Brian

You can dig it out with a sharp instrument and then cut a
standard tap washer down to size and force that in.

However a complete new ball valve/float assembly is only about a
tenner, so you could just replace the entire slider and outer
enclosure since the threads will be standard.

In message , Chris Hogg
writes

The end with the washer seemingly embedded in it actually unscrews,
although it's not obvious.

Thank you chaps, panic over. Went to the local ironmonger who only had
fairly modern sizes - mine was fitted late 70s, I think. Went through
all his old boxes, but nothing. Just then, another customer said go see
Joe Smith (local plumber we all know well), his van is parked out by X.
Eventually found the guy who showed me where it unscrews (thanks,
Chris), then fitted a new washer, FOC. Slider now back in tank and so
far, so good.

Only a very minor job, I know, but first tank I've done, although have
done taps and WC cisterns. Delighted :-)

Interesting, this being a very soft water area, absolutely no scale. The
end cap unscrewed by hand and the split pin just pulled out.

--
Graeme

After serious thinking Graeme wrote :
Our cold water tank has started overflowing, so this morning, up in the loft,
water off, partially drained cold tank, removed end cap from valve, removed
split pin, wiggled the float arm out and removed the slider thingy which has
a rubber washer in the end. The washer looks to be extremely worn, but how
do I get it out of the slider? More to the point, how do I get a new one in?
Once out, is it just a rubber disc?

A sharp small flat screwdriver, to hook it out. Most of them are a
shallow cup shape - note the correct face to face in to the valve. Any
plumbers merchant will have a replacement, but might be worth buying
the complete valve for what the cost.

In message , Harry Bloomfield
writes
After serious thinking Graeme wrote :

The washer looks to be extremely worn, but how do I get it out of the
slider? More to the point, how do I get a new one in? Once out, is
it just a rubber disc?

A sharp small flat screwdriver, to hook it out. Most of them are a
shallow cup shape - note the correct face to face in to the valve. Any
plumbers merchant will have a replacement, but might be worth buying
the complete valve for what the cost.

Fixed yesterday and the good news is no overflow this morning. It was
usually OK during the day, as water was being used but overnight the
level crept up, and would trickle out of the overflow by morning.
Fingers crossed!
--
Graeme