BTS M18 300 Bar Male DIN Outlet Cylinder Valve with Purge Valve A16310642 Single Outlet Cylinder Valve with Male M18 X 1.5 Thread with Male 300 DIN G 5/8 EN-144-3 Outlet Fitting for use with B.C.D. & Suit Inflation Systems with EN-144 DIN G5/8 Female Cylinder Attachment Thread. Supplied as standard with Extra-Long Valve Handle which ensures ease of use even when wearing the thickest types of Diving Gloves. All parts are Nitrox compatible with Viton O-Rings etc. the Cylinder Valve will require cleaning for Nitrox use in an O2 clean environment before used with Oxygen Enriched Gas.