Solar water heater vacuum tube connection
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2 Responses to Solar water heater vacuum tube connection
Leave a Reply to smoovetipp Cancel reply
So far, I’ve only seen the suggestion to use PVC or ABS fittings to create
the manifold. But neither of these plastics is acceptable for UV exposure.
I’m thinking a copper (or steel) manifold trunk, with these glued in via
polyether caulk, and that whole trunk encased in something like a sonatube
filled with foam insulation. The sonatube wouldn’t work either, being
exposed. But something like that may work. Or using polyether with plastic
fittings if it’s insulated & encased in protection?
smoovetipp
March 21, 2014 at 10:24 am
The differential expansion between the materials will crack that glued
connection.
Kevin Dickson
March 21, 2014 at 10:53 am