General Description The TYCO Model DPV-1 Dry Pipe Valves are differential valves used to automatically control the fow of water into dry pipe fre protection sprinkler systems upon operation of one or more automatic sprinklers. The DPV-1 also provides for actuation of fre alarms upon system operation. The Model DPV-1 features are as follows: • External reset. • 250 psi (17,2 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. • Compact, Pre-Trimmed, and Semi-Assembled, easy to operate valve trim. • Simple reset procedure through the elimination of priming water.