This is a Cejn Series 300 E-Safe pneumatic quick release coupling, couplings are manufactured from nickel plated brass and the nipples are manufactured from hardened zinc plated steel. This range has a maximum working pressure of 16 bar with a flow capacity of 1050 l/min. This coupling is valved which is closed when disconnected.
These fittings are designed to be lightweight, with a high flow capacity, small external dimensions and are also suitable for vacuum. The design ensures a fast, easy, one hand operation and extremely efficient. The E-Safe design vents the down stream pressure before disconnecting reducing noise and the risk of hose-whip