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Posted to uk.d-i-y
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ballcock float-operated valve in header tank
"AL_n" wrote in
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I'm still trying to solve this issue. The valve I have is the brass
type (BS 1212/1) Brand: "Wirquin".
(Andrew Gabriel) wrote in
news:j3gs8c$cuv$1 @dont-email.me:
I think that nowadays this type is used mainly for central heating
header tanks, i.e. low usage. The mechanism used in stored water
header tanks and toilet cisterns is the fast shut-off type, which
uses the water pressure to shut off rather than the force on the
float to shut off.
I would like to ditch the old brass one and fit something else, so I
guess I'll probably follow the above suggestion and fit a fast
shut-off type.
Can some recommend one, in particular, or advise of any types that
should be avoided? I want something that is as maintenance-free as
possible, because it's a real pain to access, being in an awkward
corner of the loft.
The hole in my header thank is about 1" diameter,and the threaded
portion of the valve is about 7/8" diameter, and then reduces down to
the usual thread diameter as found on compression fittings for a 15mm
pipe.
PS.... Just to clarify, the header tank is on an electric immersion heater;
it's not a central heating header tank.
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