Garden hose to seawater strainer

Discussion in 'Downeast Engine Room' started by John Hobby, Dec 2, 2019.

  1. John Hobby

    John Hobby Member

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    Ok guys, here is one for ya. I'm sitting around yesterday and got to thinking how hard it is to run fresh water into my sea strainer and not have it go all over the place with either to much water or not enough or the damn hose flies all over the place. So I was thinking can I modify a lid for the Groco and have a garden hose bib on it. It is a flat top lid. Model 1500. That way when my boat is in the cradle for the fall and spring and I do winterize or other service and need the engine to run I can have the hose connected and run the water and it will be a sealed connection and not making a mess. Is this just early winter mental thinking or is it a good idea. I actually have another lid to my Groco sea water strainer. Just thinking, and not drinking, yet! John
     
  2. Quik Fix 16

    Quik Fix 16 Senior Member

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    FW flush.jpg Put the "T" into a hose instead of messing up your Groco . I have a cooler rigged with a hose to carry from boat to boat
     
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  3. speedwagon

    speedwagon Senior Member

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    This has worked out well for me. Drilled and tapped the lid. The lid isn't thick so a nut on the underside helps distribute forces and keeps everything tight. 1/2 npt with a garden hose quick disconnect. I keep the 10' garden hose connected all the time and regularly use it to fresh water flush. Works great to winterize too. The ball valve stays closed when I'm running the boat so as not to suck air into the strainer.
     

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  4. Genius

    Genius Captain

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    I put my Tee before the strainer, it makes more sense to me. Also used for winterizing, strainer gets filled with non tox.
     
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  5. John Hobby

    John Hobby Member

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    Both great ideas. Guess I am not that crazy. Boy that strainer is close to those batteries huh Speedwagon, don't need to wash them down. Thanks John
     
  6. plowin

    plowin Captain

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    Just take a short washing machine hose with a ball valve on it and attach it to a garden hose. Turn the garden hose on and then when you want water put the short length of hose in the strainer and Open the ball valve. Simple, cheap and no mess.
     
  7. powderpro

    powderpro Captain

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    Have you seen these? They are a little spendy , but work well
     

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  8. BKay

    BKay Member

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    Those are nice and I've used them on a small engine and attached a short section of hose into a bucket to draw NOTOX. But how well do you think that would work on a larger engine - say 220hp or larger - a garden hose is considerably smaller than the 2" raw water hose. Any comments on whether the suction would draw NOTOX fast enough to lubricate the impeller?
     
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  9. Diesel Jerry

    Diesel Jerry Captain

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    Use them all the time for decom season. Or I just pour right into strainer.
     
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  10. powderpro

    powderpro Captain

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    I’ve used them on 300-500hp Diesel engines with no problem. All you are doing is idling the engine to flush fresh water or run antifreeze through it. It provides Plenty of supply to keep the impeller lubed
     
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  11. John Hobby

    John Hobby Member

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    All great thoughts and thank you all. Love the already rigged up unit for the Groco. Can't beat that. Thanks guys. Snowing in Mass so a long way from boating. I hate snow!
     
  12. Toolate

    Toolate Captain

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    I have found that the thread on my Groco strainers is the same as male adapters in PVC plumbing fittings so this could be made up very cheaply using standard white PVC plumbing parts. Just NPT threads. Easy to put a big O ring on one if you wanted to.
     
  13. John Hobby

    John Hobby Member

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    Great suggestion!
     
  14. djmarchand

    djmarchand Captain

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    I did the same thing as speedwagon above, but I only use it for fresh water flushing. For winterizing with antifreeze, I first close the thruhull, then I open the lid, start the engine and pour antifreeze into the strainer. The engine sucks it right up.

    David
     
  15. Diesel Jerry

    Diesel Jerry Captain

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    I will say having a Y valve after the seacock but before the strainer is the best option of all IMO. The allows for easy flushing of the engine, emergency bilge pumping, and if you have to force feed your engine if the water pump fails.
     
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  16. Quik Fix 16

    Quik Fix 16 Senior Member

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  17. Blitzen

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    Anyone interested is going this route make sure that the valve off the "T" has a positive lock closed and cannot be opened by mistake and the end where the hose connects also has a mechanical stop/plug. This arrangement without is a easy way to sink your boat.
     
  18. RockBottomFish

    RockBottomFish Senior Member

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    This is what i have setup and use as stated by
     
  19. Diesel Jerry

    Diesel Jerry Captain

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    Very true. I try to put the Y valve at the strainer to make it more visible and easier to put hands on.
     
  20. gmac

    gmac Senior Member

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    gmac,

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