Leaking Water Connections

Discussion in 'General Maintenance/Repair Questions' started by bbwhitejr, Dec 9, 2017.

  1. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s
    Anyone have any experience with SeaTech Marine Uniflex hoses and fittings? I have some that are dripping at times at the 1/2” hose connection. There is nothing wrong with the hose, but the connections drip. I can buy the hoses with the hose connections attached, but they are not cheap and I only need stop the drip. There are no hose washers that I can see.

    Any advice welcomed. Here is a pic. 61733BEF-0667-467F-8378-AAFC578AE65C.jpeg

    Thanks,
    Bennett
     
    Last edited: Dec 9, 2017
  2. becnme

    becnme Member SILVER Sponsor

    98
    Oct 31, 2008
    Fort Myers
    06 Tiara 36 Sovran
    Cummins QSC 500
    I have had many problems with these. What I do is remove the collar with a cut off tool and then put hose clamps on them.
     
  3. carterchapman

    carterchapman Well-Known Member TECHNICAL Contributor SILVER Sponsor

    Mar 25, 2008
    Lake Chickamauga/Marietta, GA/Ft. Myers, FL
    2006 Sea Ray 58 DB
    MAN CRM V8-900s, Twin Disc Drives; Onan 21.5 Generator
    I had those on my 340. You could look at them and they would start to leak. I found new cone washers for them. Let me see if I have the link anywhere...
     
  4. carterchapman

    carterchapman Well-Known Member TECHNICAL Contributor SILVER Sponsor

    Mar 25, 2008
    Lake Chickamauga/Marietta, GA/Ft. Myers, FL
    2006 Sea Ray 58 DB
    MAN CRM V8-900s, Twin Disc Drives; Onan 21.5 Generator
  5. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s
    I have recently see these while researching. I have seen them on my connections, but did not really realize what there purpose was. I figured out today where they go and what they do. I had not found them though and thanks for the link. These did it huh? Do you know if there is an O-ring behind it or is this the only “lose piece” that fits into the female connector?

    They leak just behind the big piece that you turn to tighten it right out the front of the crimp fitting.

    I have considered cutting these off and using a “push on” Pex female connector.

    Ordering these tonight.

    Thanks for the help,
    Bennett
     
  6. juggernaut1

    juggernaut1 Active Member

    748
    Apr 19, 2015
    Perth, Western Australia
    2006 38 Sundancer
    8.1S / ZF 63V Drives
    I've replaced some of mine with new cone washers..... better, but still drip. Plan B is to try some sealant as well. Plan C is to go to a completely different fitting.
     
  7. northern

    northern Well-Known Member

    Jan 17, 2007
    West coast Vancouver to Alaska
    380 Aft Cabin 1989 GPS and Charts by Nobeltec
    Twin 454 strait shaft
  8. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s
    I found the Pex fittings at Lowe’s and ordered a different SeaTech fitting along with some cone washers. I am going to experiment a little and see what works best.

    Bennett
     
  9. carterchapman

    carterchapman Well-Known Member TECHNICAL Contributor SILVER Sponsor

    Mar 25, 2008
    Lake Chickamauga/Marietta, GA/Ft. Myers, FL
    2006 Sea Ray 58 DB
    MAN CRM V8-900s, Twin Disc Drives; Onan 21.5 Generator
    Bennett - it's been a while, but new cone washers worked for me - I recall that you don't want to overtighten the fittings...You will probably find that your current cone washers are crushed...There was not another washer in mine - just the cone washers...
     
  10. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s
    Got it Carter and thank you. I promise you I have overtightened the ones that are dripping. They drip behind the swivel piece you tighten and directly in front of the crimp. I ordered a bunch of them.

    I am also going to experiment with some other ideas, but if the cone washers work, that will be the easiest fix. I guess i am a little anal as I hate water anywhere in my boat. Thanks for your help.

    Bennett
     
  11. carterchapman

    carterchapman Well-Known Member TECHNICAL Contributor SILVER Sponsor

    Mar 25, 2008
    Lake Chickamauga/Marietta, GA/Ft. Myers, FL
    2006 Sea Ray 58 DB
    MAN CRM V8-900s, Twin Disc Drives; Onan 21.5 Generator
    You bet Bennett. I hope they work for you as well. An incredibly cheap fix.

    I hate water anywhere as well...in fact my joke on the dock when it rains is: "I hate it when the boat gets wet"!!
     
  12. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s
    Update: Replaced cone washers on several female connectors and no more drips! At $0.73 each, cheapest fix around!

    I did make up and replace one 2’ hose. I used the push to lock Sea Tech Female connectors and a piece of Pex pipe. I really like the the new Sea Tech fittings...

    Washers and connectors came from www.freshwatersystems.com.

    Bennett
     
  13. Brett H

    Brett H Member GOLD Sponsor

    139
    Dec 12, 2009
    Lake Lanier, GA
    2004 550 Sundancer w/ MAN's - Unleashed
    Raymarine e127's; KVH HD7; Xantrex 3024 Inverter
    T-800 MAN's (D2848LE403)
    #me2 and thank you Carter & Bennett. (probably did that wrong as I don't know anything about twitter).

    I just developed a couple of leaks on Unleashed. Probably due to over tightening during recent freshwater pump replacement.

    Glad to see somebody else has already found a solution. Only needed 2 but just ordered 20 at $0.58 ea. I'm sure I'll need the others sooner or later.
     
  14. ttmott

    ttmott Well-Known Member GOLD Sponsor

    Apr 3, 2012
    Space Coast Florida
    2006 52 Sedan Bridge
    Cummins QSM11
    Timely - I just completed chlorination of the water system and just about every one of those Uniflex hose ends started dripping; I noticed the pump cycling on and off. I ordered 50 of those cone seals.....
    I counted 48 needed on the 52DB; I have no idea on how to get to the ones behind walls in the heads......

    So, I've tried tighter and looser on the fittings but no change to the drip.
    How tight should the fittings be on the new cone seals? Assume hand tight but don't know exactly; can't find on the manufacturer's web site....
     
    Last edited: Jan 8, 2018
  15. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s
    I asked the same question earlier and Carter said about a 5 on a scale of 1-10-hand tighten. I some that no matter what I do, I cannot stop the drips. Also, one day they drip and not the next. They are a pain. I am not sure that something is not up with the actual female connector. Initially, it seemed this was the 100% answer.

    I had a short 2' hose in the transom locker. Both ends were dripping. I installed new cone washers and no matter how tight or loose I got them, still dripped. Made up a new hose with a piece of Pex pipe and 2-Sea Tech female connectors and that one is perfect.

    I put new cone washers in others that are good one day and drip the next. Please keep me posted how you guys come out. I have tried barely tightening them and then tightened them as tight as possible by hand and same results.....

    Bennett
     
  16. atrick

    atrick Member

    105
    Mar 4, 2017
    Penna
    1995 searay 290 Sundancer
    1990 21 maxum
    Twin 4.3 mercrusers with alpha one drives
    305 chevy with a alpha one drive
    They make all kind of fittings to adapt to pex in the sea tech as you call them or shark-bite as they are called around here ( connector with the teeth and o-ring inside ) so you can eliminate the cone washers fittings. Or you can get regular pex fitting and crimp them together and never have to worry. They also make a release tool for the shark bite and or sea tech fittings so you can disassemble them any time you need too. Take a trip to your plumbing supply house or even home depot. When I get a leak I change them out done , fixed don't have to worry any more. It isn't as complex as people are making it out to be!
     
  17. ttmott

    ttmott Well-Known Member GOLD Sponsor

    Apr 3, 2012
    Space Coast Florida
    2006 52 Sedan Bridge
    Cummins QSM11
    My assessment is the fittings are very sensitive to the hose alignment to the connection. So, if the hose or something else should put some side stress on the fitting and not be perfectly straight it seems to be more prone to leakage. I could easily get these things to leak with a little bit of side pressure on the hose assembly. In my boat every one of the hoses on all of the manifolds turn right out of the manifold consequently putting side load on the hose to manifold fitting. Loose / tight only changes the compression on the cone seal but does not correct the misalignment. My thoughts....
     
  18. importmonkey

    importmonkey Opinionated Member SILVER Sponsor GOLD Sponsor

    851
    Jul 9, 2015
    Middle River, MD
    2007 44 Sundancer
    QSC 500s

    do all the connections you replace have enough "slack" to cut off the old connector and replace with a shark-bite connection?

    p.s. i started with replacing the cone washers and they didn't really work. it's actually the design of the connection itself - where the captured "nut" mates up with the flat part of the connector that fails. i put some stretch seal tape on a few spots when i had the 260. seemed to work really well and it was a fraction of the cost and effort to remedy.

    20170426_192800.jpg
     
  19. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s
    I concur with your thought that side loading with any stress at all is a negative. However, the output side of my freshwater pump drips with no side pressure. I will be interested when you guys get the cone washers and see what happens.

    The Sea Tech female connectors that I ordered and installed have cone washers and do not leak whatsoever and they are side loaded pretty good. The pipe in my boat is from Sea Tech and has “Uniflex” stamped on it I believe. I ordered some Sea Tech blue pipe/hose and it is not like my plumbing. It is exactly like the Pex pipe at HD or Lowes. The Sea Tech fittings fit very well. I have to see if my plumbing will fit the newer Sea Tech female connectors. If so, the next challenge will be removing the current fittings and installing the push-to connect Sea Tech fittings. Access to my manifold is terrible...

    Bennett
     
  20. ttmott

    ttmott Well-Known Member GOLD Sponsor

    Apr 3, 2012
    Space Coast Florida
    2006 52 Sedan Bridge
    Cummins QSM11
    I see - thanks. A PEX or PEX like 15mm tube and the Seatech QD fittings would not work for me without an excessive amount of rework; It does not have the bend radius the Uniflex does and would not fit to the manifolds and around all of the corners in the 52. I suppose one could put a bunch of elbows on the tube but wow....
    I really need to make the existing hose assemblies with the crimped fittings and cone seals work as they are.
     

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