The hose must only be used in accordance with system approval in argon and nitrogen fire extinguishing systems. The hose is used to connect the extinguishing agent cylinder with the check valve on the manifold. The pressure control valve is specifically intended for use in constant flow (CF) inert-gas extinguishing systems. Once installed between the hose and the manifold, the pressure reducer serves to reduce the extinguishing agent container pressure from 200 bar (2900 psi) or 300 bar (4350 psi) to a lower pressure level for downstream system areas. The hose kit includes the hose, gaskets, and constant flow regulator.