Before revision: North America: Industrial-type interconnect/interchange, based on military specification MIL-C-4109F.MIL-C-4109F (AMENDMENT 1), MILITARY SPECIFICATION, COUPLING HALVES, LOW PRESSURE, AIR HOSE, QUICK-DISCONNECT (29 JUN 1992) ARO-type interconnect/interchange, developed by ARO (now part of Ingersoll-Rand), mainly for fluid applications.
After revision: North America: Industrial-type interconnect/interchange, based on military specification MIL-C-4109F.MIL-C-4109F (AMENDMENT 1), MILITARY SPECIFICATION, COUPLING HALVES, LOW PRESSURE, AIR HOSE, QUICK-DISCONNECT (29 JUN 1992) ARO-type interconnect/interchange, developed by ARO (now part of Ingersoll-Rand), mainly for precise pneumaticcompact and lightweight fittings applications.