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fortic tank?

new direct fortic tank overflowing.balltap is fine.immersion heaters fine. hot water pressure poor. cold water pressure very good
paul, October 2010
crossflow from mixertap or valve .mainspressure cold and lowpressure hot connected to mixertap that is not biflow.when both taps are open cold pushing hot back into tank and out overflow. fit checkvalve onhot supply.

plumbo, January 2011