Features Patented brass core in all areas that contact high-pressure oxygen 20-micron, sintered-bronze inlet filter Teflon pressure regulating seat Viton and silicone o-rings FDA-recommended brass and viton seal washer Stainless steel fasteners and springs Meets ASTM-G175-03 promoted ignition tests Outlet pressure: 50 PSI Operates in a wide pressure range: 200-3,000 PSI Made in China to our rigorous quality standards 100% re-tested in our Naples, Florida facility Two-year warranty