Compact DIN First StageCompact, low profile first stageFlow-by piston designOne HP and two MP ports pressure portsFactory set I.P. at 135 to 145 psi at 3000 psiDirect attachment to 200 or 300 bar DIN connectionIncludes Delrin DIN CapClean for pre-blended nitrox up to 40% 02 p/n HL406