On 08/02/2023 23:45, Handsome Daddy wrote:
> How long would you expect a pegler full bore lever operated ball valve
> to last if not operated?
While some seam to have problems with ball valves, I tend to find them
OK - especially if you buy decent ones.
You tend to get one of two problems, they either weep around the shaft
when operated (but usually only when open), or they let by slightly when
closed. The shaft weeping I have only seen on budget screwdriver
operated isolation valves, not on decent lever or butterfly handle
operated ones. The let by problem is far less common, and does not
really mater for this application anyway.
I have used leaver valves for drain down controls on CH systems (valve
inside - pipe running through a wall to drain over a gully outside), and
also have a couple of butterfly valves either side of the Fernox TF1
magnetic / cyclonic filter. They get operated occasionally when cleaning
the filter or adding inhibitor.
> I need to re plumb couple of radiators and
> draining down complete system is a real pain. Im thinking i can put ball
> valves on pipe work and once completed turn on and leave on. It will be
> under a tiled suspended floor so not easily accessible for repair
> afterwards.
I would go for full bore valves with the butterfly handle like:
https://www.bes.co.uk/ball-valve-22mm-compression-blue-butterfly-handle-23365/
> Would I be better to cap off complete work and then freeze
> and use compression coupler to rejoin?
Not really. Obviously you retain that option whatever you do, but it
would be nice to keep that as a last resort.
--
Cheers,
John.
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