Agentwater; potassium carbonate; urea Cylindermaterialcarbon steel Valve materialcopper with nickel plating Fire rating1a 55b (china standard) Fire typea&b Working distance 3.6m Working time25.4s Driving gas nitrogen Temperature edurable -20~+55 Working pressure1.2mpa(+20) Test pressure2.1mpa Capacity3l (-5% allowed) Net weight5.41kg ± 5% Single size( dia *height)13cm*46cm Gross weight5, 85kg ± 5% (with carton) Carton size 46.5cm*20.4cm*16cm Life span3 years Certificatece, iso9001 Standardgb4351.1-2005