Recent content by phil7

That's a clever idea. Thanks. There is a separate adjustable PRV with built-in pressure dial on the supply to the cold taps, which is set at 3.5 bar static pressure. I got the 7 bar figure by backing off this valve as far as it would go. I just tried to test your theory by closing this...

Santon Premier Plus 210 unvented hot water cylinder with Santon combination cold water pressure reduction/expansion valve. External expansion vessel precharged to 3.5 bar Cold water is dripping continuously from the combination valve (through tundish). It's not the P&T relief valve. The...