BTS M25 300 Bar DIN Outlet Cylinder Valve A16310622 Cylinder Valve with M25 X 2 EN-144-1 Male Cylinder Thread with Female EN-144-3 DIN G 5/8 Outlet for use with 300 Bar DIN G5/8 Regulators.  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 use with Oxygen enriched gas.