4 lb. Steel Cylinders Grid view List view Reconditioned 4 lb CO2 Cylinder Steel RECON4LBSTVLV Carbon Dioxide Compressed Gas Cylinder with CGA320 Standard CO2 Valve Reconditioned – Refinished and Hydro Tested DOT-Approved 1800 PSI Service Pressure, 3000 PSI Test Pressure Approx. 20.5″ Height (with valve), 4″ Diameter (actual may vary) Add to cart Add to Quote