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kiwisailor

Engine Raw Water Strainer

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I finally got around to replacing all the engine raw water hoses and installing a proper raw water strainer. Previously the raw water strainer was nothing more than a Jabsco inline water filter installed only 6 inches above the seacock, below the waterline, underneath the galley sink and was a real pain to service.

Last winter I had all new seacocks installed on the boat and the new engine intake seacock is 3/4" with inline engine flush valve. This now goes up to the new Vetus 3/4" strainer installed in the engine compartment and above the waterline. I then needed to install a 3/4" to 5/8" hose adapter on the out port as the rest of the boats raw a water system is 5/8" hose. From the strainer the water goes to the engine driven freezer condenser coil (under the galley sink) and then to the engine raw water pump.

While I was at it I installed new 3/8" NPT elbows on the water pump. What I like about the new install is that the new 3/4" hose, large strainer, removal of the additional hose nipples on the raw water pump, should allow the raw water system to move water more easily with less restrictions. I'll find out how all this works in about 10 weeks!

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Updated 02-20-2018 at 07:56 AM by kiwisailor

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Comments

  1. GrandpaSteve's Avatar
    Where did you get the 3/8" bronze fittings?
  2. kiwisailor's Avatar
    Quote Originally Posted by GrandpaSteve
    Where did you get the 3/8" bronze fittings?
    Elbows are from eBay https://www.ebay.com/itm/BRONZE-ELBO...RTE61G&vxp=mtr

    Close nipples are red brass 3/8" x 2" as bronze is just not available in 3/8" size. Jamestowndistributors or eBay suppliers sell them. Make sure it's red brass and not normal brass though.
  3. GrandpaSteve's Avatar
    Great, thank you.
  4. Kenneth K's Avatar
    Nice install. I put a similar one in last year. Your tall, vertical runs to the filter would make it easy to add a fresh-water flushing tee if you desired. You could put a bronze tee fitting + shutoff valve or a Groco SSC valve (about $100) in the water intake line.

    It makes winterizing the RW cooling system very simple, and I like knowing there's not salt-water sitting in my system when the boat's lying around not being used.
  5. kiwisailor's Avatar
    Quote Originally Posted by Kenneth K
    Nice install. I put a similar one in last year. Your tall, vertical runs to the filter would make it easy to add a fresh-water flushing tee if you desired. You could put a bronze tee fitting + shutoff valve or a Groco SSC valve (about $100) in the water intake line.

    It makes winterizing the RW cooling system very simple, and I like knowing there's not salt-water sitting in my system when the boat's lying around not being used.
    Hi Kenneth, I actually have a Groco SSC valve already installed on my raw water sea cock and used it for flushing the raw water system during winterization last October. It works great and can also be used as an emergency bilge pump in a worst case event.