This system has a lever permanently welded to the M-section!
The V-section is a ball with a loose clamping ring!
The ring must have a sharp edge where the lever of the M-piece engages.
Inner dimension: 153 mm
Hose size: 120 mm
Galvanized version
5 inches
Incl. O-ring
To determine the size of the Italian coupling, measure either the outer diameter of the V-section or the inner diameter of the M-section.
The outer diameter of the V-section or the inner diameter of the M-section must be the same for the M-section and the V-section. The coupling hose connector is measured on the outer or on the inner hose diameter.