Fangzhan SCBA Features and BenefitsFangzhan combined proven concepts to develop a better SCBA - an SCBA that, after every design change, was taken back to firefighters like you for testing and to make sure it was right. The result of hundreds of hours of design, engineering, and testing: an innovative way to think about the SCBA, placing the firefighter at the center of the design process. Specifications,TypeOpen-circuit pressure demand self-contained breathing apparatus,Facepiece MaterialButyl rubber,Head HarnessSilicone or Kevlar,AlarmsBell, plain whistle or warbling whistle,Second Stage RegulatorPilot valve,Heads-Up DisplayLED style,Cylinder Pressures2216 or 4500 psig,Cylinder Durations30-, 45- or 60-minutesRecommended Industries/Use,Fire Protection,Forestry,Government,Military,Mining,Municipal Services,Nuclear,Oil and GasHazards,Airborne Particulates,Biohazard,Chemical,Confined Space,Contamination,Extreme Environment,Explosion,Fire,Gas, Vapors, Smoke,Welding FlashRegulations,EN136  EN137  ,MSC339 (91)