GENTEC R21SL Series is a Diaphram-Sensed Single Stage High Purity Stainless Steel Regulator Features and Specification: Body/Bonnet: 316 Stainless Steel Seat: PCTFE 316L Stainless Steel Diaphragm ABS adjusting Knob 2in Dual-Scale Pressure Gauges Maximum inlet pressure: 3000 psig Maximum outlet pressure: 50 psig Operating temperature range:-40 degrees farenheit -165 degrees farenheit – 40 to 74 degrees celsius Inboard Leakage 2 x 10-8 atm.cc/sec He Outboard Leakage 2 x 10-8 atm.cc/sec He Max CV:0.14 Weight:2.2lbApplications: Research Laboratories Process Analyzer Petrochemical Industry Gas Chromatography Semiconductor Industry Power Plants