the 300 series eSafe couplings feature high flow and low connection force to ensure a safe working environment, it is a one hand operated safety coupling that relieves pressure before disconnecting, eliminating the risk of a There is no hose non-return, the external threads on the coupling and nipple are provided with a thread seal at the factory, the fully automatic process simplifies operation, the eSafe safety compressed air coupling complies with ISO standard 4414 and EN 983