Will Watts GHAV100N ELETTR.ON/OFF DN100 2 (021.0102.101) fit my existing heating system?
Yes, this Watts unit (SKU 021.0102.101, category: Pipe fittings & valves) 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.



