Fire suppression system with pressure regulation

A fire suppression system (20) includes a container (22) for supplying a fire suppression agent into a compartment (A, B, C) to be protected. The container (22) communicates with a flow line (25) leading to the compartment (A ,B, C). A control (34) controls the fire suppression system, and a valve (30) on the flow line (25) delivers a variable pressure to the flow line (25) from the container (22). Further, a system is disclosed and claimed wherein a single gas supply communicates through a manifold (23) to each of a plurality of compartments (A, B, C). In addition, a system is disclosed and claimed wherein a primary gas supply container (22) switches to secondary gas supply containers (24) once a pressure within the primary gas supply (22) container drops below a predetermined amount.