Fresh water Sytems

Discussion in 'Powerboats' started by gabriel, Jun 15, 2016.

  1. gabriel
    Joined: Jan 2012
    Posts: 22
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: venezuela

    gabriel Junior Member

    Hi everyone

    I am still working on my 58Ft Bertram and now my water systems pumps failed. I had my old 32 Volts water pump with acumulator tank and an extra 110 volt 1/2hp Pump also with acumulualtor tank , when docking or having the powerplants on.

    I have 4 showers and faucets puls 2 sinks on That boat. of course not all of them will be on at the same time, but I am wandering what is the optimum system in terms of GPM and PSI that i should be looking for given that ther are too many pump options in the market

    If you guys can suggest a reliable brand it would be awesome.

    Thanks

    Gabriel
     
  2. gonzo
    Joined: Aug 2002
    Posts: 13,618
    Likes: 383, Points: 93, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    40 PSI is the nominal pressure for water systems. If you have a water saver type of faucets and showers, the flow will be 2.5 gph for showers and 2.2 gph for faucets.
     
  3. TANSL
    Joined: Sep 2011
    Posts: 5,736
    Likes: 184, Points: 73, Legacy Rep: 300
    Location: Spain

    TANSL Senior Member

    See attached figure. But at home is normal a consumption of 13 liters (3.4 US gallons) per minute.
     

    Attached Files:

  4. gonzo
    Joined: Aug 2002
    Posts: 13,618
    Likes: 383, Points: 93, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    Groco is one of the better ones but expensive. Jabsco and Flojet are OK, but if you use them daily, they won't last a year.
     
  5. FAST FRED
    Joined: Oct 2002
    Posts: 4,519
    Likes: 109, Points: 63, Legacy Rep: 1009
    Location: Conn in summers , Ortona FL in winter , with big d

    FAST FRED Senior Member

    By using a bait well pump, you get a larger electric motor that lasts longer.

    The Sureflow works fine but as noted the far more pricy options last the longest.

    Galley Maid and Obendorfer are top of the line , and priced like it.
     
  6. gonzo
    Joined: Aug 2002
    Posts: 13,618
    Likes: 383, Points: 93, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    Are bait well pumps OK for drinking water? Some of the deck washdown pumps say they are not.
     
  7. FAST FRED
    Joined: Oct 2002
    Posts: 4,519
    Likes: 109, Points: 63, Legacy Rep: 1009
    Location: Conn in summers , Ortona FL in winter , with big d

    FAST FRED Senior Member

    Are bait well pumps OK for drinking water? Some of the deck washdown pumps say they are not.

    Looking at pumps in the box at Worst Marine , the pump heads are the same (same marking and numbers) as is the pressure switch.

    The only difference I find is the length of the motor .

    Different brands could be different.

    The horror of horrors for long term use is the belted Jabsco.
     
  8. gonzo
    Joined: Aug 2002
    Posts: 13,618
    Likes: 383, Points: 93, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    I agree, the belts stretch and break and the diaphragms fail.
     
  9. Barry
    Joined: Mar 2002
    Posts: 1,136
    Likes: 78, Points: 48, Legacy Rep: 158

    Barry Senior Member

    Google headhunter marine pump
    Top quality pump
    You can set pressures
    Ours is 10 years old and never had a problem
     
  10. Barry
    Joined: Mar 2002
    Posts: 1,136
    Likes: 78, Points: 48, Legacy Rep: 158

    Barry Senior Member

    Headhunter

    Excalibur
    Or I see they have a newer one Mach 1
     
  11. philSweet
    Joined: May 2008
    Posts: 2,234
    Likes: 140, Points: 63, Legacy Rep: 1082
    Location: Beaufort, SC and H'ville, NC

    philSweet Senior Member

    Yup, Headhunter is pretty good. Electronics can be iffy, but can be replaced for about $100.
     
  12. FAST FRED
    Joined: Oct 2002
    Posts: 4,519
    Likes: 109, Points: 63, Legacy Rep: 1009
    Location: Conn in summers , Ortona FL in winter , with big d

    FAST FRED Senior Member

    "I agree, the belts stretch and break and the diaphragms fail."

    As a 22+ year liveaboard we found a different hassle.

    The PAR pressure switch had tiny contacts and used a propritary thread pattern.And was yacht stoopid in price.

    The solution was to take out the brass threaded portion drill it out and sweat a copper tubing in so a Square D house switch at 1/2 the cost and 100x the reliability could be fitted.

    The other hassle was should the tiny PAR accumulator not be re aired monthly it would water log.

    The pump would reach cut off pressure , while at speed ,and the over pressure from inertia would eventually crack the eccentric that worked the diaphragm.

    Solution , house style accumulator with diaphragm.
     
  13. gonzo
    Joined: Aug 2002
    Posts: 13,618
    Likes: 383, Points: 93, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    I've seen a lot of cracked eccentrics. It makes sense that an accumulator would fix the problem.
     

  14. keysdisease
    Joined: Mar 2006
    Posts: 794
    Likes: 41, Points: 28, Legacy Rep: 324
    Location: South Florida USA

    keysdisease Senior Member

    The PAR / Jabsco belt /diaphragm pump is nothing less than prehistoric and a failure not waiting, but about to happen. Way too many ways to fail, belt, diaphragm, compensator, pressure switch, reminds me of something Fred and Barney may have cobbled together in the cave. When was the last time someone designed something with a bakelite body?

    Make your first decision in replacement consideration crossing these beauties off your list.

    :cool:


     

    Attached Files:

    • PAR.jpg
      PAR.jpg
      File size:
      6 KB
      Views:
      208
Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.