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TFP1020 <br />Page 6 of 20 <br />1" NPT <br />AIR SUPPLY <br />PORT <br />1/2" NPT <br />WATER <br />SUPPLY <br />PRESSURE <br />& ALARM <br />TEST PORT <br />CLAPPER <br />ASSEMBLY <br />LATCHED, <br />OPEN <br />3/4" NPT <br />LOW BODY <br />DRAIN <br />PORT <br />AIR PRESSURE <br />TO SYSTEM <br />CLAPPER <br />ASSEMBLY <br />CLAPPER <br />ASSEMBLY <br />INSET <br />POSITION <br />FULLY OPEN <br />CLAPPER LATC <br />PIVOTS TO ALLC <br />CLAPPER ASSEM <br />TO FULLY OPEI <br />3/4" NPT ALARM <br />v PORT OPEN TO <br />ATMOSPHERE <br />CLAPPER <br />ASSEMBLY <br />WATERFLOW <br />TO SYSTEM <br />3M PORT <br />ERFLOW <br />ALARM <br />FROM <br />FROM <br />WATER SUPPLY <br />AIR <br />WATER SUPPLY <br />SEAT <br />FIGURE 3A <br />FIGURE 3C <br />SET POSITION <br />WATER <br />OPERATED POSITION <br />SEAT I <br />ALARM <br />PORT <br />\ / <br />DRAIN FROM <br />DRAIN FROM" <br />/ <br />SYSTEM <br />SYSTEM <br />VALVE INTERMEDIATE <br />COMPLETE <br />WATERWAY CHAMBER <br />PUSH HERE <br />FIGURE 3B <br />`` <br />TO RESET <br />VALVE <br />SET POSITION <br />INTERMEDIATE <br />CHAMBER <br />RESET <br />KNOB <br />RESET <br />ASSEMBLY CLAPPER <br />LATCH <br />_ <br />° PIVOTSTO <br />CLAPPER UNLATCH <br />LATCH CLAPPER <br />ASSEMBLY <br />MAIN DRAIN PORT: <br />1-1/4" NPT` (2-1/2 INCH <br />CLAPPER <br />& 3 INCH VALVES) <br />ASSEMBLY <br />gz <br />2" NPT (4 INCH VALVE) <br />RESEATED <br />WATER SUPPLY <br />`DN40 FOR VALVES WITH <br />WATER SUPPLY <br />SHUT OFF <br />ISO THREADED PORTS <br />SHUT OFF <br />DRAIN POSITION <br />FIGURE 3 - PART 1 OF 2 <br />MODEL DPV-1 DRY PIPE VALVES <br />2-112, 3, AND 4 INCH (DN65, DN80, AND DN100) <br />SET AND OPEN POSITIONS <br />RESET POSITION <br />