Single Stage Preset Regulator - Oxygen - CGA 540 - M1A-540-P - Nut and NippleHorizontal OutletFEATURES: Chrome-plated brass body with all brass high-pressure chamber Maximum inlet pressure 3000 psi Durable neoprene diaphragm Internal reseating relief valve protects against over-pressurization Sintered filter for additional safety and to extend regulator life 2'' diameter gauges UL listed 50 psi preset6 year Warranty ...