supply of supply and transportation of co2 gas type portable fire extinguishersupply and transportation of co2 gas type portable fire extinguisher,supply and transportation of co2 gas type portable fire extinguisher 4.5 kg capacity confor ming is. 15683-2018 (first rev.) with isi marks. the fire extinguisher should be complying 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-307-1966 (second re v.) make:- amtex or similar. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]