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Pressures in fire-protection systems that exceed the maximum allowed by NFPA standards must be reduced to acceptable levels for sprinkler systems and fire department hose valves.
Fire Protection Pressure Restricting Devices are used to reduce water pressure at hose line by restricting flow. Removable breakable link allows restriction to be overridden.
Fire Sprinkler Pressure Relief Valves are used to relieve excess system pressure due to pressure surges or temperature changes.
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