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03-30-2018, 10:37 AM
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#21
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Guru
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 5,055
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Take the cover off and look at the actual valves and hoses.
Is there another set of valves just like this somewhere else in the boat?
My guess is that these are simple on / off valves that control the hoses connected to the Starboard tank. When the arrow is pointed at the word “Port”, the hoses to the Starboard tank are closed and the engine is running on the port tank. If I’m right, there has to be another set of valves to control the port tank.
Possum came with four valves just like this. I could draw / return to both tanks at the same time. I could draw / return to either tank. Or I could draw from one tank and return to the other.
__________________
Parks Masterson
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03-30-2018, 11:02 AM
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#22
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Guru
City: Palm Coast, FL
Vessel Name: Coquina
Vessel Model: Lagoon 380
Join Date: Jan 2017
Posts: 2,354
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Reading all this; I'm reminded of the John Denver fuel valve fatality.
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03-30-2018, 11:39 AM
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#23
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Guru
City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin 40
Join Date: Oct 2011
Posts: 25,389
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Quote:
Originally Posted by diver dave
Reading all this; I'm reminded of the John Denver fuel valve fatality.
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Having seen his actual aircraft after the accident and studying it at Monterrey Naval Post Graduate Safety training, what exactly is the point concerning his error as I know the probable answer?
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03-30-2018, 11:41 AM
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#24
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Guru
City: Palm Coast, FL
Vessel Name: Coquina
Vessel Model: Lagoon 380
Join Date: Jan 2017
Posts: 2,354
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Quote:
Originally Posted by psneeld
Having seen his actual aircraft after the accident and studying it at Monterrey Naval Post Graduate Safety training, what exactly is the point concerning his error as I know the probable answer?
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Poor human factors in the fuel management design. But, as you well know, there is usually not just one cause for these things.
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03-30-2018, 11:44 AM
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#25
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Guru
City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin 40
Join Date: Oct 2011
Posts: 25,389
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yep, poor design and......
...zero familiarity with his new aircraft, lack of training, and an out of sight valve were the reasons the Navy experts summed up.
Hardly an issue for a reasonably intelligent boater hopefully.....
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03-30-2018, 11:54 AM
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#26
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Guru
City: Palm Coast, FL
Vessel Name: Coquina
Vessel Model: Lagoon 380
Join Date: Jan 2017
Posts: 2,354
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yep, sad. Never flown a rutan design, but these are "stall resistant". Was there research on why an engine out would head it at high descent speed? Back when I had to worry with this, all the fuel valves were in front of me and well marked;
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03-30-2018, 11:54 AM
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#27
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Guru
City: Boston
Vessel Name: Adelante
Vessel Model: IG 30
Join Date: Nov 2016
Posts: 1,397
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Quote:
Originally Posted by Roamer Blue
Only because the only ones I have seen are 180 degree sweeps...
Are there 3-way valves that function within a 90 degree throw?
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The seachoice valve photo is a typical L ball drilling with 360 handle so 4 possible configurations. Left, right, none, or both. T drillings are also available as are 180's.
https://www.directmaterial.com/knowl...ll-valve-work/
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03-30-2018, 12:12 PM
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#28
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Guru
City: Palm Coast, FL
Vessel Name: Coquina
Vessel Model: Lagoon 380
Join Date: Jan 2017
Posts: 2,354
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So, this is a shot i took from a GB42 last week. Twins plus gen and i submit even without a lot of marking its pretty clear. Of course u can add a placard or two on the hazards of pick up and return on different tanks.
But no, I can't explain the 45 deg handle. Not my boat...
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03-30-2018, 12:32 PM
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#29
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Guru
City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin 40
Join Date: Oct 2011
Posts: 25,389
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Quote:
Originally Posted by diver dave
yep, sad. Never flown a rutan design, but these are "stall resistant". Was there research on why an engine out would head it at high descent speed? Back when I had to worry with this, all the fuel valves were in front of me and well marked;
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his fuel valve if I remember was behind his head on the left.....thus the inadvertent engine shut down because he couldnt see it and not enough experience with that particular aircraft.....
because I wasnt involved in the actual investigation ..nor did I read it....and it is third hand info from an accident investigation class...my pass alongs are just that.....not fact... 
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03-31-2018, 05:55 AM
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#30
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Guru
Join Date: Oct 2007
Posts: 22,553
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The valve folks sell dual valves that switch the supply and return at the same time.
No confusion .
KISS
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03-31-2018, 06:20 AM
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#31
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Guru
City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin 40
Join Date: Oct 2011
Posts: 25,389
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The Seachoice diagram is correct and the valves I am familiar with on the assistance towboats have been that way for 20 plus years. For 3 port valves by Seachoice and possibly someone else ad I am not sure what valves we used.
They are confusing and while the arrow head does indicate something, it does not indicate correctly if you plumb tanks right and left and engine out the bottom.
Confused me until I shutdown the engine one day and re-sharpied the mounting plate labels. Catches many a new captain.
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07-15-2018, 01:08 PM
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#32
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Veteran Member
City: Saint Joseph, Mi
Join Date: Apr 2018
Posts: 29
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balance tube
would it be easier if you added a simple balance tube from one tank to the other. If you only had a return to one tank, the tanks would remain even via the balance tube?? You could always put a valve at the tank drain fitting, connecting one to the other.
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07-15-2018, 01:35 PM
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#33
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Guru
City: Aventura FL
Vessel Name: Kinja
Vessel Model: American Tug 34 #116
Join Date: Oct 2017
Posts: 9,397
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If you split the fuel supply to either the port or starboard tank, you prevent cross contamination and changing the return to the tank of choice, you can balance the boat port/starboard.
__________________
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