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02-05-2018, 06:53 PM
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#1
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Veteran Member
City: Vancouver
Join Date: Jan 2017
Posts: 46
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diesel fuel lines
are there any preferences for the type of material that diesel fuel lines should be made of? I presently have copper tubing but it looks very dirty - accumulations of crud on the bottom. If I replace the fuel lines, should I replace with copper tubing or the appropriate fuel hose?
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02-05-2018, 07:12 PM
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#2
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Guru
City: Friday Harbor, WA USA
Vessel Name: FORTITUDE
Vessel Model: Kadey Krogen 54-8
Join Date: Jul 2017
Posts: 1,015
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following
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02-05-2018, 07:13 PM
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#3
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Guru
City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin/PSN 40
Join Date: Oct 2011
Posts: 28,147
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either are satisfactory.
where and how they are installed makes a world of difference.
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02-05-2018, 07:38 PM
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#4
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Guru
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 12,834
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I chose USCG approved rubber fuel line approved for diesel fuel during my refit (replace all as it was 14 years old). In the event that I own the boat 15 years from now, I'll replace it again. Once you switch to rubber hose, if you ever have to replace it again, cost and time involved will be very minimal. I have seen copper lines for steering fail, presumably from vibration. No way to know the condition until they fail. With hose you can visually check for cracks and flex it to see how brittle it's getting.
Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
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02-05-2018, 09:14 PM
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#5
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Senior Member
City: Kiln,MS
Join Date: May 2016
Posts: 457
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Are you wanting to go back with hard line or flexible hose.?
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02-05-2018, 11:51 PM
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#6
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Veteran Member
City: Vancouver
Join Date: Jan 2017
Posts: 46
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If I can use either tubing or hose, I think I will go with hose. The installation will be easier and I think the costs are a push. Thanks for your advice.
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02-06-2018, 02:04 AM
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#7
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Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 21,185
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Use the proper approved rubber hose.
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02-06-2018, 05:08 AM
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#8
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Guru
City: Kilmarnock VA
Vessel Name: Wandering Star
Vessel Model: PSN40
Join Date: Apr 2016
Posts: 1,395
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Clean,bright-colored rubber hose looks pretty but takes up more space & has much less of a bend radius than copper. Done in a neat fashion ,copper looks nice in the engine room,too. I would have to imagine copper has less fuel flow restriction verses rubber-walled hose. That said, I'll make due with the 5/16" supply & return lines in our boat and if ,in the future,we need/decide to repower & the engine manufacturer calls for larger diameter lines, I'm sure it will be hose with which the lines get replaced.
__________________
-Shawn-
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02-06-2018, 05:57 AM
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#9
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Guru
Join Date: Oct 2007
Posts: 22,553
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Have used both , rubber is easier and quicker.
Purchase the screw on fittings , rather than the store sweged on and you can make repairs easily.
That said on building a new boat I would use either steel tubing or small diameter steel pipe , mount it , paint it and forget it.
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02-06-2018, 08:51 AM
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#10
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Guru
City: Signal Mtn., TN
Vessel Name: Stella Maris
Vessel Model: Defever 44
Join Date: Feb 2012
Posts: 2,742
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Quote:
Originally Posted by O C Diver
I chose USCG approved rubber fuel line approved for diesel fuel during my refit (replace all as it was 14 years old). In the event that I own the boat 15 years from now, I'll replace it again. Once you switch to rubber hose, if you ever have to replace it again, cost and time involved will be very minimal. I have seen copper lines for steering fail, presumably from vibration. No way to know the condition until they fail. With hose you can visually check for cracks and flex it to see how brittle it's getting.
Ted
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Ted, do you happen to have any pix of your fuel lines you could post? I’m especially interested in how hoses look coming off a fuel distribution manifold.
Like many here, I suspect, I have 30-year-old copper lines. Lots of tight bends particularly off the manifold. I need to replace one from the polisher that is badly crimped and I have my doubts about a few others.
Quote:
Originally Posted by FF
Have used both , rubber is easier and quicker.
Purchase the screw on fittings , rather than the store sweged on and you can make repairs easily.
That said on building a new boat I would use either steel tubing or small diameter steel pipe , mount it , paint it and forget it.
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Fred, do you have a link or photo of the screw-ons you’re suggesting?
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02-06-2018, 11:18 AM
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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 angus99
Ted, do you happen to have any pix of your fuel lines you could post? I’m especially interested in how hoses look coming off a fuel distribution manifold.
Like many here, I suspect, I have 30-year-old copper lines. Lots of tight bends particularly off the manifold. I need to replace one from the polisher that is badly crimped and I have my doubts about a few others.
Fred, do you have a link or photo of the screw-ons you’re suggesting?
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Fred may be talking about screw on reusable fittings and hose for fuel line, like the kind for hydraulic.
__________________
Marty
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02-06-2018, 11:43 AM
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#12
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Guru
City: Signal Mtn., TN
Vessel Name: Stella Maris
Vessel Model: Defever 44
Join Date: Feb 2012
Posts: 2,742
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Quote:
Originally Posted by Pack Mule
Fred may be talking about screw on reusable fittings and hose for fuel line, like the kind for hydraulic.
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Thanks, Marty. I’ll look them up. Just not clear on how they connect to the hose without swaging.
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02-06-2018, 11:49 AM
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#13
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Guru
City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin/PSN 40
Join Date: Oct 2011
Posts: 28,147
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Quote:
Originally Posted by angus99
Thanks, Marty. I’ll look them up. Just not clear on how they connect to the hose without swaging.
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they screw on ...there is a fitting that goes inside the hose, and the outer fitting scews on and compresses everything. no swagong necessary and they are reusable.
an alternative is the press to fit> Parker blue hose and use a hose clamp yo met ABYC.
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02-06-2018, 12:16 PM
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#14
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Guru
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 12,834
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Quote:
Originally Posted by angus99
Ted, do you happen to have any pix of your fuel lines you could post? I’m especially interested in how hoses look coming off a fuel distribution manifold.
Like many here, I suspect, I have 30-year-old copper lines. Lots of tight bends particularly off the manifold. I need to replace one from the polisher that is badly crimped and I have my doubts about a few others.
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All hose clamps are stepless (lined) so the worm and slots don't come in contact with the hose. All hangers are lined or plastic. PVC electrical conduit hangers come in many sizes, are inexpensive, and work great for hose and electrical wiring.
Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
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02-06-2018, 03:54 PM
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#15
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Guru
City: Signal Mtn., TN
Vessel Name: Stella Maris
Vessel Model: Defever 44
Join Date: Feb 2012
Posts: 2,742
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Thank you both!
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02-06-2018, 04:24 PM
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#16
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Guru
City: East Coast
Vessel Name: M/V Maerin (Sold)
Vessel Model: Solo 4303
Join Date: Jun 2013
Posts: 886
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Parker 221FR hose is the blue hose typically used in marine fuel applications. It is expensive. It has the USCG A1 embossed on the outer jacket. Any hose you use for fuel must carry that A1 USCG rating, a surveyor can ding you if it's not A1.
The fittings other posts have described are series 20. They are field attachable, two piece. If you read the fine print, 221FR hose is supposed to use series 26 fittings (require a hydraulic crimp) to fully meet the A1 spec, but I've never heard of a surveyor calling that out. The series 20 fittings are commonly used, they are easy to make up with a vise and wrenches. The hose can be cut with a cutoff wheel, hacksaw works but makes a messy cut.
Keep in mind that anything supported over an engine must be a metallic support, in a fire it won't let go. So the best way to fasten the hose is the rubber lined stainless pipe band.
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02-06-2018, 04:58 PM
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#17
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Guru
City: League City, TX
Vessel Name: Pelago
Vessel Model: Wellcraft 3300 Coastal
Join Date: Aug 2011
Posts: 1,069
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Another option, similar to the Parker 221FR hose is Aeroquip FC234.
__________________
Larry
M/V Pelago
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02-06-2018, 09:43 PM
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#18
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Guru
City: Mt Crested Butte
Vessel Name: Artemis
Vessel Model: Cheoy Lee 67
Join Date: Feb 2013
Posts: 551
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One important no no is galvinized, the diesel melts the galv and clogs the injection pump, injectors....
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02-07-2018, 02:22 AM
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#19
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Senior Member
City: WAALRE
Vessel Name: Mr. Blu
Vessel Model: Beneteau Swift Trawler 52
Join Date: Jun 2017
Posts: 147
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In Europe diesel fuel lines must be double clamped (AND OPPOSITE) on each side. Does this obligation not apply in the US?
__________________
Paul
Cruising the Netherlands
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02-07-2018, 06:09 AM
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#20
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Guru
Join Date: Oct 2007
Posts: 22,553
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Fred may be talking about screw on reusable fittings and hose for fuel line, like the kind for hydraulic.
When you visit the store to buy the hose , they will happily provide either crimp on or screw on fittings.
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