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Old 04-05-2022, 05:32 AM   #21
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Some times hydraulic connectors are used for fuel polishing. That could be the out flow and the in would be the fill opening. Just a thought?
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Old 04-05-2022, 06:26 AM   #22
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Post #1 and #18 have pictures that I would guess most people would say answer the question.

Any further wild guessing may suggest you are one of the ones that never reads most or all of the threads.....

Granted it's not absolute, but without looking behind it, we may never know..
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Old 04-05-2022, 07:59 AM   #23
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Originally Posted by Osprey69 View Post
Thank you Circumnavigator! That's got to be it. ...

Where the fuel fill hose enter into the engine room it is impossible to contort my 6' 4"ness to tend a few things including solving this riddle.

If it's really hydraulics, then it might be hose or hard pipe. In either case you might be able to figure out which hose or pipe came from that area that you can't otherwise account for.


I like the suggestion that you pull it out a bit and see what connects to it. If it has a typical band hose clamp, it's not hydraulics. If you can see the hose, that will help with my suggestion above.


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Old 04-05-2022, 08:27 AM   #24
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In my industry we use those fittings on our propane connections and hoses.
My logical brain would want to group flammables plumbing near one another and
away from water connections which makes me want it to be fuel, oil or propane.

If the installation adheres to typical practice, then that fitting would 'receive' the
pressurized fluid. Does your boat have hydraulic powered windlass or thruster(s)?
Beside steering, no hydraulics on the boat.
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Old 04-05-2022, 08:33 AM   #25
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Quote:
Originally Posted by psneeld View Post
Post #1 and #18 have pictures that I would guess most people would say answer the question.

Any further wild guessing may suggest you are one of the ones that never reads most or all of the threads.....

Granted it's not absolute, but without looking behind it, we may never know..
No wild guessing. Hence my post #8 regarding Circumnavigators post #7.

I will carefully remove and hopefully make a determination shortly.
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Old 04-05-2022, 08:44 AM   #26
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No wild guessing. Hence my post #8 regarding Circumnavigators post #7.

I will carefully remove and hopefully make a determination shortly.
Didn't mean you....just all the posts after a HUGELY possible explanation was given as I posted.

The fitting WAS used by Hatteras as a washdown...but as I also added, till you know what connects to it...maybe nothing, then it is still a mystery....

....but very unlikely to be many of the guesses. Like you have posted, no hydraulics. Even if it has been repurposed, you won't know till you pull it out if you can't locate what attaches to it any other way.
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Old 04-05-2022, 09:08 AM   #27
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How about turning on all water systems and pushing in the button in the middle and see what comes out?
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Old 04-05-2022, 09:19 AM   #28
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+1, lwarden !
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Old 04-05-2022, 01:52 PM   #29
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How about turning on all water systems and pushing in the button in the middle and see what comes out?
Have some rags and a bucket handy in case it's not water. No point making more work for yourself cleaning up if it's hydraulic oil or something else.

Me, I'd back off the fitting from the surface and see what colored hose is connected on the back. Then look below/toward where a hose would be feeding to that area. Find the matching hose and track down where it goes.
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Old 04-06-2022, 12:18 PM   #30
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So pulled the fitting and here it is pulled out as far as it will go...
Attached Thumbnails
mystery fitting 2.jpg  
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Old 04-06-2022, 12:19 PM   #31
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So pulled the fitting and here it is pulled out as far as it will go...
Now look for the other end of that hose.
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Old 04-06-2022, 12:22 PM   #32
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The other end probably goes to a wash down pump.
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Old 04-06-2022, 12:46 PM   #33
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Yup...that's a someday when I can contort my self into that area.
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Old 04-06-2022, 07:20 PM   #34
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There are some pretty inexpensive borescope cameras available these days. Ones that use a WiFi connection to use your phone as the viewscreen. I've used one on our EB47 to help track down overhead lighting circuits and wiring chases. That and retrieve items lost under a bilge grate, which would have been a LOT of trouble to remove with the hydraulic swim platform pump mounted to it. Camera let me see well enough to use some LONG pliers to snag the items.

Might help get a look into those areas. https://www.amazon.com/gp/product/B07MV6X4M4
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Old 04-06-2022, 09:13 PM   #35
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I have a similar fitting on my boat. I was told it was a compressed air fitting for a dive compressor.
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Old 04-09-2022, 07:39 PM   #36
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Second for an
air outlet for a hooka diving rig. Any compressors below?
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Old 04-10-2022, 02:42 PM   #37
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No compressors or indicator there may have been. Some day i will get someone into that corner o the engine room and find out. Till then...
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Old 04-11-2022, 12:47 PM   #38
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Mystery fitting

Looks like a connection for an air compressor.
Maybe to blow out the water system to winterize. Can you trace the line?
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Old 04-11-2022, 01:12 PM   #39
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???

Look on the end of your Bar-B-Q fuel hose and see if you have a match.
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Old 04-11-2022, 01:16 PM   #40
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Mystery fitting

How about a propane bbq supply fitting?
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