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    Sandwich Plate and Water Temp Fitting Sizes?

    Does anyone know what the exact sizes I need are for the above? I've been searching online and it seems the standard top hose diameter is 34mm. Anyone confirm this? And I cant find out which sandwich plate to use? Is it: (1) 3/4 UNF (2) M20 x 1.5mm (3) M18 x 1.5mm any help appreciated...