$46.00 Puritan Bennett 21A / 31A / 41A .25-6 LPM Flow Control Valve quantity Add to cart SKU: CS012-1 Categories: Liquid O2, PB 21A 31A & 41A Tags: 21A, 31A, 41A, 775855, bennett, control, flow, puritan, valve Description Description Please Call 866-446-8765 to order. Online ordering currently unavailable. Mfg # 775855 CIS # CS012 Call for more info 866-446-8765 Related products HomeFill M9 Cylinder w/ Conserver Read more UltraFill M6 Cylinder w/ Post Valve 2000 PSI Read more HomeFill M9 Cylinder w/ Post Valve Read more UltraFill ME Cylinder w/ Post Valve 2000 PSI Read more