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REGULATING VALVES TESTING AND REPAIR
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TM-10-4210-235-13 Fire Suppression Equipment Model FSES-1 Manual
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Figure 5-1.  Dry Chemical Nozzle Assembly
TM 10-4210-235-13 5-7 DRY CHEMICAL NOZZLE REPAIR This task covers: a. Disassembly b. Repair c. Assembly INITIAL  SETUP: Tools Materials/Pans General Mechanics Tool Kit, Appendix B, Section III, Gasket, Appendix H, item 11 item 1 Preformed Packing (2), Appendix H, Item 12 Spanner Wrench, Appendix B, Section III, item 5 Gasket, Appendix H, item 14 Strap Wrench, Appendix B, Section III, item 3 Rod Wiper, Appendix H, item 15 Equipment Condition Preformed Packing, Appendix H, item 16 Remove nozzles (para 4-14). Spring Pin, Appendix H, item 17 Antisieze Tape, Appendix E, Section II, item 4 a. Disassembly (1) Remove four screws (1) (fig.  5-1) and tie bar (2). (2) Remove nipple (3). (3) Using strap wrench, remove nozzle (4), gasket (5), nozzle tip (6), and sleeve (7).  Discard gasket. (4) Using  spanner  wrench,  remove  forward  valve  seat  (8)  and  preformed  packing  (9).    Discard  preformed packing. (5) Scribe an alignment line between handle (10) and valve body (11). (6) Remove four screws (12) and valve handle (10). (7) Un-screw rear seal bushing (13) from valve body (11).  Manipulate lever (14) as necessary. (8) Carefully remove screw (1) (fig.  5-2), valve seal washer (2), gasket (3), spring retainer (4), spring (5), rod wiper  (6),  preformed  packing  (7),  and  rear  seal  bushing  (8).    Discard  gasket,  rod  wiper,  and  preformed packing. (9) Remove preformed packing (9) and spring pin(10).  Disassemble valve stem (11), lever (12), and two drive buttons (1). Discard preformed packing and spring pin. b. Repair Repair Is limited to replacement of defective or damaged components only. 5-3

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