Description General description • Single-stage • CGA inlet connection, needle valve outlet with ¼ in. NPTM connection • Max. inlet pressure: 0-4000 psig • Temp. range: -40 to 140°F • 316 Stainless Steel body 1 ½ in. gauge face, PTFE seals and inner friction sleeves • NPTF bonnet-vent (1/8 in.) connection for piping regulator to fume hood in case of diaphragm failure; order bonnet-vent tubing connectors separately • Use with "T"-purge valves (listed separately) when regulating corrosive gases to minimize gas hydrolysis and corrosion of equipment • Use for high-purity applications Lecture-bottle gas regulators include a PTFE sealing washer. Order spare PTFE sealing washers separately. Other Notes See Technical Information Bulletin AL-151 Gas Regulators: Selection, Installation and Operation. Legal Information Aldrich is a registered trademark of Sigma-Aldrich Co. LLC