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Table   2-4.   Maximum   Allowable   Hose   Line   Sag.
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TM-10-3835-219-14 Hoseline Outfit Fuel Handling 4-Inch Diameter Manual
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Figure   2-9.   Flow   Control   Kit   Items
T M    1 0 - 3 8 3 5 - 2 1 9 - 14 2 - 1 0 .   U s e    o f    F l o w    C o n t r o l    K i t    i t e m s .   ( f i g u r e     2 - 9) a.  l.      The   flow   control   kit   includes   check   valves,   gate   valves,   and   an   assortment   of   couplings   and adapters,   a   pipe   tee,   a   strainer,   pipe   clamps   and   two   5-foot   (1.5m)   hose   assemblies.   These   parts   are   provided   for use   with   the   hoseline   in   a   variety   of   situations.   The   check   valves   are   used   on   long   upgrades.   The   gate   valves   can be   used   to   isolate   a   roadway   or   suspension   crossing,   or   direct   the   fuel   flow   along   the   main   route   or   through   the pipe   to   a   branch   line.   The   strainer   is   installed   at   the   suction   end   of   the   pump,   to   remove   any   debris   before   it damages   the   pump.   The   hose   assemblies   and   couplings   are   used   as   required,   in   conjunction   with   the   strainer and   the   various   valves. b .    Gate   Valve.   Gate   valve   can   be   used   to   isolate   a   section   of   hoseline   (such   as   a   suspension   or   roadway crossing),   to   direct   fuel   flow   (by   using   two   gate   valves   and   pipe   tee)   or   as   shutoff   valves   at   initial   (suction)   and terminal   (discharge)   ends   of   hoseline.   The   gate   valves   are   supplied   with   flange-to-grooved   adapters   and   are installed   using   procedures   in   operator   maintenance   chapter. C A U T I O N Ensure   that   check   valve   is   positioned   correctly   to   allow   free   flow   in   the   direction desired.    Reverse    installation    will    cause    flow    blockage. c.     Check   Valve.   Check   valve   must   be   installed   on   hoseline   to   prevent   backflow   when   pumps   are   shut   down. Locate   check   valve   at   downstream   (discharge)   end   of   each   pump   and   near   bottom   of   long   upgrades.   The   check valves   are   supplied   with   grooved   coupling   faces   and   can   be   instaIled,   using   an   additional   coupling   clamp, according   to   procedures   in   operator   maintenance   chapter. d.      Pipe   Tee.   Pipe   tee   is   used   for   creating   takeoff   (spur)   lines   leading   away   from   main   hoseline   route.   The   tee is   supplied   with   grooved   ends   on   all   sides   and   is   installed   using   coupling   procedure   in   operator   maintenance chapter. e.   Strainer   Strainer   should   be   attached   to   suction   end   of   the   pump   used   with   hoseline   outfit.   A   hose assembly   should   be   connected   to   pump   suction   end,   and   strainer   attached   between   end   of   hose   and   fuel   source. N O T E Cone   of   strainer   should   face   downstream   or   point   in   the   direction   of   flow. 2 - 31

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