differences between cartridge type and stored pressure extinguisher?
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WHAT IS THE DIFFERENCE BETWEEN STORED PRESSURE AND SIDE CARTRIDGE OPERATED EXTINGUISHERS?
Stored pressure extinguishers have the compressed nitrogen gas that is used as the propellant for the dry chemical agent stored in the same canister as the dry chemical. Side cartridge operated units store the dry chemical in a non-pressurized container and the compressed nitrogen gas in a separate cartridge. Only at the time of actuation is the extinguisher under pressure and then only briefly.
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