CEJN 10-915-6550 Nipple 3 mm Auto-Coupling CEJN Series 915 is specially designed for industrial automations where our manufacturing connections can minimize costly downtimes due to repair-work or mold and tool changes. CEJN Auto-Couplings built into manifolds allow fast, simultaneous connection and disconnection of an unlimited number of lines for a wide variety of media. The unique patented design enables the couplings to be connected/disconnected under full working pressure. The high performing couplings and nipples have a working pressure of up to 4350 PSI (300 bar) and their Flat-Face, Non-Drip design ensures leak-free performance. Series 915 is made of steel and is suitable for hydraulic applications such as clamping and palletizing machines and automatic tool changing systems on machine tools. The Series has a wide choice of thread connections where G, Rc and NPT are available as standard. There are alternative ways of mounting by using separate thread connections. Special models using other materials are available on request.