GENTEC Model 155T Series Compressed Gas Regulators are dual-stage extra heavy duty models designed for applications where precise and constant outlet pressures are required over a wide range of inlet pressures. Ideal for laboratory testing, manifold installations, and many other industrial applications. 7/8in-14RHM, Gas: Inert. Dual-stage construction Forged brass body and housing cap Delrin cap bushing for smooth adjustments Self re-seating external pressure relief valve Conforms to CGA E-4 standard for gas pressure regulators Sintered bronze inlet filter 2-1/2in gauges for easy reading 2in and 3- 1/4in diaphragms Weight: 8 lbs 8 oz