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01-11-2019, 12:39 PM
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#1
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TF Site Team
City: Paris,TN
Vessel Name: Slo-Poke
Vessel Model: Jorgensen custom 44
Join Date: Jan 2013
Posts: 3,749
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Quick Disconnects for diesel
Does anyone know if they make QD's for diesel fuel? This will not be a pressure line. My homemade manual fuel transfer/polish system uses an open end hose to transfer fuel to any of my tanks manually thru the fills. I would like to be able to disconnect the hose after the transfer,drain the fuel and roll it up to store it. It doesn't roll up nice when still connected to transfer pump. I know it would be better to plumb it to every tank but this system works ok for us. The hose is about 10' long and I can never get all the fuel out of it plus I would like to store it in a different area seperate from the pump.
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Marty
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01-11-2019, 12:58 PM
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#2
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Guru
City: Brookline, NH
Vessel Name: Shalloway
Vessel Model: Defever 44, twin Perkins
Join Date: Sep 2013
Posts: 2,260
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I don't know why you couldn't use quick connect hydraulic fittings. They seal tight on both ends when disconnected.
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01-11-2019, 01:06 PM
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#3
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Valued Technical Contributor
City: Litchfield, Ct
Join Date: Aug 2012
Posts: 6,784
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The only concern I would have about using hydraulic or gas outboard quick disconnects is that many fuel systems are under vacuum while the engine is running. Either make sure that they will hold a vacuum when disconnected or put an appropriate male/female fitting on the fuel system end with a plug or cap that will assure no air gets sucked in.
David
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01-11-2019, 01:36 PM
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#4
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TF Site Team
City: Paris,TN
Vessel Name: Slo-Poke
Vessel Model: Jorgensen custom 44
Join Date: Jan 2013
Posts: 3,749
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Quote:
Originally Posted by djmarchand
The only concern I would have about using hydraulic or gas outboard quick disconnects is that many fuel systems are under vacuum while the engine is running. Either make sure that they will hold a vacuum when disconnected or put an appropriate male/female fitting on the fuel system end with a plug or cap that will assure no air gets sucked in.
David
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All I’m using right now is a tapered wooden plug in the loose end of hose. All tanks have shut valves before fuel transfer system .
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Marty
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01-11-2019, 01:43 PM
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#5
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TF Site Team
City: Paris,TN
Vessel Name: Slo-Poke
Vessel Model: Jorgensen custom 44
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Quote:
Originally Posted by kchace
I don't know why you couldn't use quick connect hydraulic fittings. They seal tight on both ends when disconnected.
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I wasn’t sure if the diesel would attack the seals in QD.
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Marty
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01-11-2019, 01:58 PM
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#6
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Guru
City: Fort Myers, FL... Summers in the Great Lakes
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Hydraulic quick disconnects are offered with a variety of seal materials. Buna which is the most common material for orings is compatible with diesel. Any decent hydraulic shop should be able to look up the seal material of the disconnect they are selling you. Hydraulic oil is probably close enough to diesel that it wouldn't be an issue anyway. They probably have a low pressure solution that is less expensive.
Ted
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01-11-2019, 02:59 PM
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#7
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TF Site Team
City: Paris,TN
Vessel Name: Slo-Poke
Vessel Model: Jorgensen custom 44
Join Date: Jan 2013
Posts: 3,749
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Thanks I’ll check with our local hydraulic shop .
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Marty
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01-11-2019, 07:19 PM
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#8
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Guru
City: Ft Pierce
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My biggest concern if anyone else cares, ABYC fuel system requirements are quite stringent.
Not very flexible for valves, drains, bleed ports, connectors, etc, etc....
Even Seabord Marines squeeze bulb setup I dont think meets ABYC the way I read it...but it is long and coex.
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01-11-2019, 07:50 PM
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#9
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TF Site Team
City: Paris,TN
Vessel Name: Slo-Poke
Vessel Model: Jorgensen custom 44
Join Date: Jan 2013
Posts: 3,749
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Quote:
Originally Posted by psneeld
My biggest concern if anyone else cares, ABYC fuel system requirements are quite stringent.
Not very flexible for valves, drains, bleed ports, connectors, etc, etc....
Even Seabord Marines squeeze bulb setup I dont think meets ABYC the way I read it...but it is long and coex.
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Thanks I need to look into requirements. I’m sure my fuel system could use some overhaul.
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Marty
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01-17-2019, 11:25 AM
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#10
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Senior Member
City: North West Basin
Vessel Name: Moderation
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Join Date: Aug 2016
Posts: 176
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A valve between the quick connect and the fill point would solve any vacuum questions if you have room. It would also lessen the possibility of a quick connect weeping fuel.
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01-17-2019, 12:10 PM
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#11
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TF Site Team
City: Paris,TN
Vessel Name: Slo-Poke
Vessel Model: Jorgensen custom 44
Join Date: Jan 2013
Posts: 3,749
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Quote:
Originally Posted by ksceviour
A valve between the quick connect and the fill point would solve any vacuum questions if you have room. It would also lessen the possibility of a quick connect weeping fuel.
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Thanks I like that idea .
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Marty
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01-18-2019, 07:22 AM
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#12
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Guru
Join Date: Oct 2007
Posts: 22,553
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WE have used QD to pump out oil from our 6-71 at change time.
A rotary hand crank does short work of removing 8 gallons into old 5 gal pails for disposal.
No sign of air in the old oil .No drips , no leaks seen.
Fitted QD caps are made that protect the engine and pump hoses when not in use.
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