supply of co2 gas type portable fire extinguisherco2 gas type portable fire extinguisher,supply and transportation of co2 gas type portable fire extinguisher 4.5 kg capacity with m ounting stand conforming is. 15683-2018 (first rev.) with isi marks. the fire extinguisher should be compl ying with (1) isi mark & cce approved new seamless gas cylinder as per is :7285 ( part 1&2) -2004 (third rev.). (2) isi marked wheel valve as per is 3224-2002 ( third rev.) amendment no. 2 of january 2009. ( 3) discharge rubber hose wire braided 10mm dia horn and (4) fully charged with co2 gas conforming is-3 07-1966 (second rev.) make:- amtex or similar. safety circular no.2015/sig/a/fire/pt. dt.09.09.2015 [ wa rranty period: 30 months after the date of delivery ] ]