Will Comisa Extension piece (1/2″x40) (77.15.116) fit my existing heating system?
Yes, this Comisa unit (SKU 77.15.116, 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.



