Cylinders will need to be charged (filled). Dimensions:Height - 510 mm 20.07 in. ; Width - 154 mm 6.06 in. ; Cylinder Volume - 6.6 liter Pressures: Working pressure at 20°C: 15 bar Working pressure at 60°C: 17 bar Working pressure at 0°C : 12.6 bar Container Test Pressure: 35 bar Container Burst Pressure: 110 bar Operating head material: Brass, chrome / nickel electroplate Container material: Steel EN 10130-04 (FePO4) Valve Technical Specifications: Valve type: FE - Pyrotechnical and Manual actuated Operating Voltage: 12 or 24 VDC Working pressure: 10 - 80 bar Burst safe valve: 45 - 50 bar Valve outlet: 3/8.