Description: Dura-Cyl low pressure liquid cylinders provide the longest holding time,lowest evaporation rate,highest gas-withdrawal rate and best life-cycle cost. • Ideal for liquid nitrogen,oxygen,argon,CO2 or nitrous oxide • Different sizes and pressures to better meet your needs • Stainless-steel vessel • Thicker,dent-resistent outer shell • Durable,inner-vessel support system • Heavy-duty footring and large diameter handling ring with four supports • Combination pressure Control Regulator • Roto-CalTM Liquid Level Gauge System