GENTEC HP152 Series is a Single-Stage High Purity Brass Regulator designed for High Purity applications where occasional readjustment of the working pressure is acceptable. Features and Specification: Body/Bonnet: Nickle-Plated Forged Brass Seat: PU 2in 316L Stainless Steel Diaphragm 2in Dual-Scale Pressure Gauges Maximum inlet pressure: 500 psig Maximum outlet pressure: 100 psig Needle Valve outlet Operating temperature range: 0 to 140 degrees farenheit – 17 to 60 degrees celsius Weight: 3 lb 2 ozApplications: Calibration of Pressures Gauges & Test Equipment Supply of carrier gases for Gas Chromatography