135 Degree Radiator 1-3/4 Inch ID Hose Connector, Aluminum - Walmart.com - Walmart.com
904 | One-pipe system double straight distributor for 3/4”Male radiator connection | Icma S.p.a.
905 | One-pipe system double angle distributor for 3/4”Male radiator connection | Icma S.p.a.
Simplex VARIOCON Module with Thermostatic Insert with Square and Right Straight Swivel Connections, for radiators with Integrated valves with G3/4" Connection F12020: Amazon.co.uk: DIY & Tools
CORNAT T591517 41641 x 3/4-inch S Connection for Radiator: Amazon.de: Baumarkt
Automotive Hoses & Clamps Steel 90 Degree Radiator 1-1/4 Inch ID Hose Connector
Coolant Radiator Pipe Hose Connector For VW Golf MK4 Jetta MK4 Bora 4 AUDI A3 S3 | eBay
Bykski B TJ3, 10mm G1/4'' 3/8'' Hose Pipe Barb Fitting, Soft Tube Connector For Water Cooling PC Radiator Brass Diamond Grain|Fans & Cooling| - AliExpress
R388 | Giacomini S.p.A.
Steam Heat Radiator Pipe Connections & Types Definitions of one pipe vs two pipe steam heat, upflow vs downflow steam distribution, vacuum/vapor steam systems