AP Diving AP50 - How to Distinguish the Two Types of Hoses and Connectors

AP Diving Ltd. Medium Pressure and Convoluted Hose Shortening Instructions
Page 25 of 38
TOP:
Standard AP50C hose with
standard diameter hose end
(13 mm diameter / 6.35 mm
(1/4”) bore hose with 16.5 mm
diameter hose end fitting)
BOTTOM:
Larger diameter AP150C hose
with larger diameter hose end
(14 mm diameter / 7.9 mm
(5/16”) bore hose with 18.8 mm
diameter hose end fitting)
5.2 How to distinguish the two types of hoses and connectors
As mentioned above, the two types of hoses have different diameters:
- The AP150C larger type measures 9/16 inch (a little over 14 mm) in diameter and has a
bore of around 7.9 mm (5/16”);
- The AP50C standard type measures 1/2 inch (almost 13 mm) in diameter and has a
bore of around 6.35 mm (1/4”).
Old Auto Air-only 14 mm diameter MP hose New standard type 13 mm diameter MP hose
Old Auto Air 7.9 mm (5/16”) bore MP hose New standard type 6.35 mm (1/4”) bore MP hose