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http://indianaquariumhobbyist.com/community/ :: View topic - Overflow Pipe..
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Overflow Pipe..

 
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josyjames
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PostPosted: Sun Aug 14, 2011 1:00 pm Post subject: Overflow Pipe.. Reply with quote

 Any  body  had  used  the  overflow  pipe  for  the  marine/freshwater  tank?
 
 My  intention  of  making  overflow  pipe:
 
 Currently  doing  a  project  on  auto  top  up  system  using  float  valve.  The  water  in  the  main  tank  evaporates  in  time.  So  doing  a  system  using  float  valve.  The  float  valve  maintains  the  level  of  the  water  in  the  aquarium.  When  the  water  level  goes  down,  the  float  valve  activates  the  pump  in  a  small  sump  kept  below  the  tank.
 
 When  the  water  level  reaches  the  set  level,  the  float  valve  comes  to  the  normal  level  and  stops  the  pump.
 
 Now  wanted  a  overflow  pipe  for  a  safer  side.  At  worst  case  scenario,  if  the  float  valve  conks  off  and  if  in  any  case  the  pump  continuously  pumps  water  into  the  main  tank,  need  a  overflow  pipe  to  drain  the  water  back  to  the  sump.
 
 Was  planning  to  do  an  overflow  pipe  like  this:
 
   
 
 If  the  water  level  goes  up,  the  water  will  be  drained  back  to  the  sump.
 
 Has  anybody  done  this  kind  of  overflow  pipe?
 
 Suggestions  required  in  designing  the  overflow  pipe.   Smile
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saikumar
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PostPosted: Sun Aug 14, 2011 3:52 pm Post subject: Re: Overflow Pipe.. Reply with quote

 Hey  man,  you  ll  find  more  of  it  in  sump  designs  at  MFK.  Mostly  used  when  you  dont  want  to  drill.
 I  remember  someone  from  Delhi  post  it  on  MFK  as  well.
 
 I  think  the  small  pipe  piece  above  the  "to  sump"   'T'  joint  is  redundant?  as  water  would  anyway  come  down  through  the  T.
 Do  you  intend  to  use  that  for  priming?  if  so  a  valve  on  the  'T'  to  sump  will  help.
 
 
 Cheers!
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gremlin
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PostPosted: Sun Aug 14, 2011 6:04 pm Post subject: Re: Overflow Pipe.. Reply with quote

 I  think  the  overflow  like  that  will  not  work  if  there  is  no  continous  siphon.  You'll  be  better  of  using  2  float  switches.  Better  yet,  have  just  enough  water  that  your  tank  evoprates  a  day  and  you  can  replace  that  amt  each  day.  Also  you  need  a  float  switch  in  your  fw  reservoir  so  your  pump  don't  run  dry.
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prask2
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PostPosted: Sun Aug 14, 2011 9:45 pm Post subject: Re: Overflow Pipe.. Reply with quote

 i  think  theres  one  small  problem.  how  are  u  going  to  kick  start  the  siphon??  there  will  be  an  air  lock  in  the  pipe  that  flows  from  the  tank  to  the  sump.  u  need  to  get  the  air  out  to  start  the  flow.
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josyjames
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PostPosted: Sun Aug 14, 2011 10:38 pm Post subject: Re: Overflow Pipe.. Reply with quote

 @  Saikumar,
 
 Thanks..  Will  look  into  MFK.
 
 The  "T"  joint  will  be  made  almost  exact  at  the  same  position  on  the  inlet  pipe  where  the  level  would  be  maintained  in  the  tank.
 
 This  will  prevent  the  water  from  draining  from  the  pipe.
 
 @  Germlin,
 
 Yes.  I  would  have  two  float  valve.  One  float  valve  in  the  sump  will  make  sure  that  the  pump  does  not  run  if  the  water  is  not  there  in  the  reservoir.  Both  float  valve  will  be  connected  in  series  connection.
 
 When  the  water  level  goes  down  in  the  display  tank,  the  first  float  valve  activates.  The  pump  will  still  run  if  the  float  valve  in  the  sump  is  in  the  activated  situation.  So  if  the  water  in  the  reservoir  is  very  low  and  if  still  the  first  float  level  activates,  the  pump  will  not  run.
 
 @  prask2
 
 How  about  connecting  a  NRV  to  the  top  of  the  pipe  as  shown  in  the  below  image.  So  only  during  the  first  priming,  the  air  has  to  be  sucked  out.  Once  the  overflow  pipe  is  primed,  the  pipe  will  always  have  the  water  inside  the  overflow  pipe.
 
 
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SHRIRAJ
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PostPosted: Mon Aug 15, 2011 7:18 am Post subject: Re: Overflow Pipe.. Reply with quote

 shelly
 check  this  image  this  is  my  over  flow  pipe  worked  perfectly.the  place  ment  of  the  T  is  very  important.  and  i  had  connected  the  air  line  pipe  to  the  air  inlet  of  the  power  head.  because  if  there  was  any  failure  the  motor  use  to  suck  the  air  out.  and  there  has  to  be  a  ball  valve  for  emergency  shut  off  and  is  also  used  when  starting  the  siphon.
 
       
 
 
 
 
 
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josyjames
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PostPosted: Mon Aug 15, 2011 11:18 am Post subject: Re: Overflow Pipe.. Reply with quote

 @  Shriraj,
 
 Thanks  for  your  input.  I  had  already  done  the  setup  but  was  without  the  NRV  at  the  top  so  was  having  issue  in  priming  at  the  beginning.
 
 How  about  this  setup?  Where-in  the  T  joint  is  placed  in  the  same  level  of  the  inlet.  Once  the  pipe  is  siphoned,  the  water  will  always  be  there  in  the  pipe.
 
   
 
 Will  this  function  properly?  I  think  it  should....   Smile   Smile
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prask2
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PostPosted: Mon Aug 15, 2011 3:11 pm Post subject: Re: Overflow Pipe.. Reply with quote

 yes  u  can  use  a  valve  to  suck  the  air  out.  or  u  have  to  suck  the  air  out  from  the  pipe  (  not  the  sump  pipe  the  other  one)  make  sure  u  have  regulator  or  a  lock  for  the  pipe  that  is  flowing  to  the  sump.  i  like  the  design  before  the  above  one.  i  dont  think  it  is  a  good  idea  to  keep  the  outflow  to  the  sump  at  the  same  level  with  the  tank  water  level.  i  havent  built  one  but  planning  to  after  i  build  my  5x2x2  aquarium.  i  think  this  video  will  be  helpful  to  u.
 
 
 http://www.youtube.com/watch?v=7DFk4bnIxEg&feature=relmfu
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SHRIRAJ
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PostPosted: Mon Aug 15, 2011 10:07 pm Post subject: Re: Overflow Pipe.. Reply with quote

 no  it  has  to  be  below  the  water  level  i  had  tried  that  but  did  not  work  it  has  to  be  below.  the  more  you  keep  it  below  the  better  the  flow
 
 http://www.youtube.com/watch?v=65yVr7DiDls&feature=relmfu.
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josyjames
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PostPosted: Tue Aug 16, 2011 9:21 pm Post subject: Re: Overflow Pipe.. Reply with quote

 Hi  Shriraj,
 
 Why  the  "T"  joint  has  to  be  below  the  water  level?  If  I  keep  it  low,  the  water  will  drain  out  from  the  pipe  right??
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SHRIRAJ
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PostPosted: Tue Aug 16, 2011 10:07 pm Post subject: Re: Overflow Pipe.. Reply with quote

 the  position  of  the  T  should  be  low  because  the  rate  of  water  flow  below  the  water  level  will  be  good.
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