bids are invited for the cylindrical part of the body 02 ) 03 ) capacities: water type extinguisher 09 itr propellants: co2 gas cartridge operated extinguishers having a maximum dew-point of -55c 04 ) weight: a fully charged portable fire extinguisher shall not be more than 17 kg o5 ) initial charge: 60 gm co2 gas cartridge ( gas cartridge shall be isi marked as per is 4947 ) 06 ) spare cartridge: 60 gm co2 gas 07 ) fire rating: as cartridge isi marked per latest is 15683 08 ) operating ( minimum 2a ) . position: up right 09 ) body: mild steel as per 1s 10 ) bulk range throw: - the minimum effective discharge lime of shall have 13s and the minimum bulk range of extinguishers shall be not less than 2 mtr 11 ) caps, valves and closures: cylinder caps, valves and closures shall be designed to provide release of pressure before complete disengagement. a cap, valves or closure shall withstand the burst test pressure specified for the cylinder for 01minute without rupture, for this test, remove or plug pressure relief devices. 12 ) rechargeable extinguisher: extinguisher designed to be 13 ) fill density: mass recharged after use. in kg of extinguishing medium is 15683 per liter of container volume for use, complete with valve and internal fittings. 14 ) dip-tubes and filters