Plug valve DPV-1, ACC-1

pneumaticfor controlfor water

Dry Pipe Valve The DN100 and DN150 TYCO Model DPV-1 Dry Pipe Valves are differential valves used to automatically control the flow of water into dry pipe fire protection sprinkler systems upon operation of one or more automatic sprinklers. The Model DPV-1 Dry Pipe Valve also provides for actuation of fire alarms upon system operation. Features for the Model DPV-1 Dry Pipe Valve are as follows: • External reset • 16 bar pressure rating • Unique offset single clapper design enabling a simple compact valve to minimize installation labor • Ductile iron construction to ensure a lightweight valve to minimize shipping cost • A variety of inlet and outlet connections • Simple reset procedure through the elimination of priming water Dry pipe sprinkler systems are used in unheated warehouses, parking garages, store windows, attic spaces, loading docks, and other areas exposed to freezing temperatures, where water filled pipe cannot be utilized. When set for service, the dry pipe sprinkler system is pressurized with air (or nitrogen). The loss of pressure through an operated automatic sprinkler in response to heat from a fire permits the Model DPV-1 Dry Pipe Valve to open and allow a flow of water into the sprinkler system piping. Table B establishes the minimum required system air pressure that includes a safety factor to help prevent false operations that occur due to water supply fluctuations.