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NOTE: This is an unformatted excerpt from our online fire protection training library.

Introduction to Clean Agents

Clean Agent System Operation Sequence and Component Sub-Systems

Agent Storage Cylinders

Steel cylinders are utilized to the store the necessary clean agent. The type of cylinder varies with the agent employed. Clean agents, in liquid form and super-pressurized with nitrogen to 24.8 bar (360 psig), are stored in relatively lightweight welded cylinders. Agents can also be stored in the form of either as a liquid or a gas at higher pressure levels in heavyweight seamless spun cylinders. Where more than one cylinder is utilized to store the agent required to protect a space, the cylinders are required to be of the same size and contain the same amount of agent (NFPA 2001). 

Flex hoses are generally utilized to connect the agent cylinders to the discharge piping. This allows for easier installation of the agent cylinders. 

Material discharged from all agent cylinders is collected together into a manifold pipe prior to flowing toward the protected space. For some agents, mostly inert gas agents, a pressure reducing orifice is installed at the end of the manifold pipe to allow for the use of less expensive schedule 40 steel pipe.
NOTE: This is an unformatted excerpt from our online fire protection training library.

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