hi guys/bowtieboy, what about using `Ballvalves`or installing some sort of filter before the valve. there should not be much debris or corrosion in heating pipes as the water is heated it loses it`s corrosive ability it normally produces a sludge type material, good luck, cheers

Hey bowtie - I had some not so long ago in a rest home flow/ret - mine didnt shut off at all not even partially due to erosion - similar age

gate valve should be ok to go back in - make sure DZR


i think it will be something similar - IF however it is just crap under gate then i dont see why you could not try as you suggest as a quick/cheap fix

however if debri is getting to the flow/ret hot water supply where is it coming from? where else is it getting to and what other damage is it doing to other valving/tapware/pumping etc?

maybe prudent to install strainer to water supply somewhere accessible on water main into property?




butt welded copper is awesome - fusion or soldered?

Whatever goes back in, it wont last as long as the first valves installed there. Flanged ballvalves or butterfly valves is what I would put back in, but with advise for the owners to use (or exercise) the valves every 3 or 6 months - as we all know, they will last longer in that situation if used regularly.
Just my $2.00 + $50.00 consultancy fee + gst. (got huge licensing fees coming up)