Frostbite FB400 Radiator Hose Fitting, 1-1/4 Inch, LS Swap Radiators
Radiator fitting mismatch | Screwfix Community Forum
3/4" Angle distributor valve for two-pipe systems with by-pass and connection for 3/4"x18 (Eurocono) steel panel radiators. Distance between connection 50 mm
Automotive Hoses & Clamps Steel 90 Degree Radiator 1-1/4 Inch ID Hose Connector
Straight Chrome Thermostatic Euro Connection Valves
CORNAT T591517 41641 x 3/4-inch S Connection for Radiator: Amazon.de: Baumarkt
Oventrop Uno one-pipe connection piece 1013164 DN 15xG 3/4 AG, for swapped flow / return
Steam Heat Radiator Pipe Connections & Types Definitions of one pipe vs two pipe steam heat, upflow vs downflow steam distribution, vacuum/vapor steam systems