Disc valve DPV-1

manualfor wateriron

The TYCO Model DPV-1 Preaction Type B Valves automatically control the flow of water into preaction fire protection sprinkler systems upon operation of a fire detection system or operation of one or more automatic sprinklers. The Model DPV-1 Preaction Type B Valves also provide for actuation of fire alarms upon system operation, and other features 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 Preaction Type B Systems are used in unheated warehouses, parking garages, attic spaces, loading docks, and other areas exposed to freezing temperatures, where water filled pipe cannot be utilized. Although the typical application for Preaction Type B Systems are the same as for standard automatic dry pipe sprinkler systems, the added feature of system operation by a fire detection system can potentially increase the speed of water delivery by starting to pre-fill the system piping with water before a sprinkler operation. Consequently, these systems may be desirable for larger system volumes. A TYCO Model ACC-1 Dry Pipe Valve Accelerator is provided as standard so that should operation occur via opening of one or more sprinklers prior to operation of the fire detection system, the sprinkler system will still have the capability to potentially increase the speed of water delivery.