310 Series External threads on the couplings and nipples have been pre-treated with thread sealing. Used on bus ramps and is compatible with many other couplings, see more info below. Technical data Nominal flow diameter: 5.3 mm (7/32") Airflow (l/min): 925 l/min (32.7 CFM) Max. working pressure: 16 bar (230 PSI) Min. burst pressure: 140 bar (2030 PSI) Connecting Force (N): 70.7 N Temperature range: -20°C — +100°C (-4°F — +212°F) Material coupling: Galvanized steel/brass Nipple material: Hardened galvanized steel Switchable with: Atlas Copco QIC8, Rectus 23/24, Tema 1400/1423, Prevost ISC06/ISI06, Foster 3003, Oetiker B1, Hansen 3000 The flow capacity is measured at an input pressure of 6 bar and a pressure drop of 0.5 bar.