Will Watts RUBINETTO PORTAMANOMETRO RF 3/8 (403R38MP) fit my existing heating system?
Yes, this Watts unit (SKU 403R38MP, category: Boiler room automation & actuators) is manufactured to European EN 12828 hydronic standards. Verify the connection thread or nominal size (e.g. DN15 1/2", DN20 3/4", M30×1.5 or Danfoss RA Click) – our engineering advisor Vytautas lists directly compatible mating components on this page.




