Manuals Type Manuals Language English Manual Files SuperFlow® First Stage Regulator (P/N 305-161) Maintenance Manual Changelog May - 02, 2024 Added note icons throughout. Updated step five text and image and step six text on page FRST-7 in section 1.4.3 Procedure for Reassembly. Product First Stage w/Balanced Second Stage Regulator Assembly SuperFlow First Stage Regulator