“AIRFS” is the series of quick couplings with female connector featuring a ball sealing system; they are made of carbon steel with superficial galvanisation treatment. Thanks to their better resistance to the sealing ball wear with respect to the valve with gasket, the “AIRFS” series couplings are mainly used in applications with dirt conditions, such as in the agricultural sector. Size 1/2 is interchangeable in accordance with international standard ISO 7241-1 series “A”.