Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 08-12-2022, 14:25   #1
Registered User

Join Date: Apr 2017
Location: Auckland, NZ
Boat: Cavalier 39 Mk1
Posts: 57
Gas hose length limitations?

Is there a limit on the length of the lpg (propane) rubber hose? Some installations go from rubber hose to copper pipe back to rubber hose at the stove; Iím thinking it is better to do away with all the joints and just go rubber hose all the way. Yes, the hose needs to be replaced every few years, but it doesnít seem to be too expensive. This is in New Zealand (BS EN 599/C AS/NZS 1869/C standards), but the common-sense part, which Iím more concerned withÖ, is universal.
Iím planning on having the aluminium cylinder outside on the pushpit, and the hose to run through an inverted J access pipe via the lazarette etc, mounted internally just under the toerail. About 6 or 7 m in length.
Should this be ok?
Thanks in advance.
JeremyFowler is offline   Reply With Quote
Old 08-12-2022, 14:32   #2
Registered User
 
Franziska's Avatar

Join Date: Mar 2011
Location: Panschwitz, Germany
Boat: Woods Mira 35 Catamaran
Posts: 3,416
Re: Gas hose length limitations?

Rubber hose is much more prone to damage, hence it's common practice and in many jurisdictions legally required to use the minimum length needed and do the rest in copper tubing.
Franziska is offline   Reply With Quote
Old 08-12-2022, 14:53   #3
Registered User

Join Date: Sep 2017
Location: Langley, WA
Boat: Nordic 44
Posts: 2,257
Re: Gas hose length limitations?

I have one rubber hose that is 35 feet long, about 11 meters and another about 20 feet. As for longevity, I was told to replace it every 10 years. At about 15 I replaced them. Cut them open and they looked like new.

IMO the joints along with copper corrosion in a salt air environment are more problematic than all rubber. For physical protection I wrapped the hose in split electrical loom in more exposed areas. That hose is very tough, double layered and hard to cut.
stormalong is online now   Reply With Quote
Old 08-12-2022, 15:09   #4
Writing Full-Time Since 2014
 
thinwater's Avatar

Join Date: Nov 2008
Location: Deale, MD
Boat: PDQ Altair, 32/34
Posts: 9,032
Re: Gas hose length limitations?

I believe ABYC specifies no connections within the cabin other than at the appliance, because connections are the most common source of leaks. The tank manifild connection is to be in a vented propane locker. So from a common sense perspective, at least one group believes that long hose runs are, in fact, the simplest, safest way.


If you make several connection is the cabin (using copper adds two) just make sure they are very good and accessible for leak testing. Leaks can develop over time with hose.
__________________
Gear Testing--Engineering--Sailing
https://sail-delmarva.blogspot.com/
thinwater is offline   Reply With Quote
Old 08-12-2022, 15:29   #5
Registered User

Join Date: Mar 2007
Location: Santa Cruz
Boat: Boatless Again
Posts: 6,004
Re: Gas hose length limitations?

Quote:
Originally Posted by thinwater View Post
I believe ABYC specifies no connections within the cabin other than at the appliance, because connections are the most common source of leaks. The tank manifild connection is to be in a vented propane locker. So from a common sense perspective, at least one group believes that long hose runs are, in fact, the simplest, safest way.


If you make several connection is the cabin (using copper adds two) just make sure they are very good and accessible for leak testing. Leaks can develop over time with hose.
Another area where I and a good part of the rest of the world ignore the ABYC.
donradcliffe is offline   Reply With Quote
Old 08-12-2022, 15:52   #6
Registered User
 
SVTatia's Avatar

Join Date: Jul 2007
Location: Toronto, Canada
Boat: Luders 33 - hull 23
Posts: 1,654
Re: Gas hose length limitations?

Quote:
Originally Posted by JeremyFowler View Post
Is there a limit on the length of the lpg (propane) rubber hose? Some installations go from rubber hose to copper pipe back to rubber hose at the stove; Iím thinking it is better to do away with all the joints and just go rubber hose all the way. Yes, the hose needs to be replaced every few years, but it doesnít seem to be too expensive. This is in New Zealand (BS EN 599/C AS/NZS 1869/C standards), but the common-sense part, which Iím more concerned withÖ, is universal.
Iím planning on having the aluminium cylinder outside on the pushpit, and the hose to run through an inverted J access pipe via the lazarette etc, mounted internally just under the toerail. About 6 or 7 m in length.
Should this be ok?
Thanks in advance.
Mine is 25f long, and most of the hose is inside a PVC electric conduit, its easier and safer to secure the conduit - pay attention how you secure the hose, as vibration could chafe it.
I used a bulkhead joint as the one below to pass the hose thru deck, its water tight.
Attached Thumbnails
Click image for larger version

Name:	Blkhd joint.jpg
Views:	41
Size:	14.9 KB
ID:	268465  
SVTatia is offline   Reply With Quote
Old 08-12-2022, 16:31   #7
Registered User

Join Date: May 2015
Location: Muskegon, Mi
Boat: Columbia 36
Posts: 803
Re: Gas hose length limitations?

When I converted my 41 footer to propane, I needed about 32 feet of hose. The longest single length offered by Trident was 35 feet, which is what I used. That was a lot cheaper than having a custom length made up, and "close enough".
I was pretty surprised the first time I saw a French built boat with it's shut off valve and several connections inside the cabin. I knew AYBC didn't allow that, was surprised France did. I don't know how long you could actually go without problems, but since the longest premade length I could find was 35 feet, that must be pretty close. Go too far and you won't have enough pressure to properly run the burners. It's only 3 psi to start with as I recall.
capt jgw is offline   Reply With Quote
Old 08-12-2022, 17:05   #8
Marine Service Provider
 
boatpoker's Avatar

Join Date: Nov 2008
Location: Port Credit, Ontario or Bahamas
Boat: Benford 38 Fantail Cruiser
Posts: 6,238
Re: Gas hose length limitations?

Quote:
Originally Posted by Franziska View Post
Rubber hose is much more prone to damage, hence it's common practice and in many jurisdictions legally required to use the minimum length needed and do the rest in copper tubing.
Reference for those legal requirements please.
__________________
If you're not laughing, you're not doin' it right.
boatpoker is offline   Reply With Quote
Old 08-12-2022, 17:10   #9
Marine Service Provider
 
boatpoker's Avatar

Join Date: Nov 2008
Location: Port Credit, Ontario or Bahamas
Boat: Benford 38 Fantail Cruiser
Posts: 6,238
Re: Gas hose length limitations?

Quote:
Originally Posted by donradcliffe View Post
Another area where I and a good part of the rest of the world ignore the ABYC.
Yup ! Lots of people around with that attitude ...
Attached Thumbnails
Click image for larger version

Name:	11 PROPANE 10.jpg
Views:	63
Size:	21.4 KB
ID:	268466   Click image for larger version

Name:	11 propane yellow.jpg
Views:	73
Size:	36.9 KB
ID:	268467  

Click image for larger version

Name:	PROPANE.jpg
Views:	60
Size:	29.5 KB
ID:	268468   Click image for larger version

Name:	propane 300.gif
Views:	56
Size:	35.2 KB
ID:	268469  

Click image for larger version

Name:	gas to propane furnace.gif
Views:	84
Size:	177.2 KB
ID:	268470   Click image for larger version

Name:	LPG Far Reach 2.jpg
Views:	77
Size:	27.2 KB
ID:	268471  

__________________
If you're not laughing, you're not doin' it right.
boatpoker is offline   Reply With Quote
Old 08-12-2022, 17:29   #10
Registered User

Join Date: Aug 2021
Location: PNW
Boat: 35 Ft. cutter, custom
Posts: 1,081
Re: Gas hose length limitations?

They are all over the world, but perhaps not in NZ?
Anyway, the Parker-Hannifin hose is available in several inside diameters if you are worried about pressure drop.
I believe that this hose might meet your specs.
It's an armored hose, would probably need an axe to damage it.
Compatible fittings of all persuasion no problem.

https://ph.parker.com/us/en/lpg-gas-...89-1989-type-1
__________________
Beginning to Prepare to Commence
Bowdrie is online now   Reply With Quote
Old 08-12-2022, 17:44   #11
Registered User

Join Date: Feb 2010
Location: Australia
Posts: 1,708
Re: Gas hose length limitations?

Here in Australia there are basically 3 groups of rules
1 AMSA. requires all piping to be copper or stainless steel supported every 500 mm in insulated fairleads with a flexible hose no longer than 1.5 meters at the appliance and no more than a single appliance on a direct run. Must be tested and installed by a qualified gasfitter , compliance plate and certificate must be available, survey testing annually...... there are many more pages.
2. RVís and mobile homes. Again, must be fitted by a qualified gas fitter and have a compliance plate..... all copper piping supported at 300 mm intervals, reissue of certificate and test report upon sale of vehicle. No flex hose longer than 1.5 meters
3. domestic Lpg. All of the above but the runs are all copper to the regulator and cylinder and a different authority.
There is industrial commercial as well but Thatís a whole other thing.
AMSA is definitely the strictest regarding LPG and thereís a lot of reading in both the official regs and individual SMSís and the 3 instances above are the barest outlines , thereís much much more.
skipperpete is offline   Reply With Quote
Old 08-12-2022, 21:40   #12
Registered User
 
deblen's Avatar

Join Date: Oct 2014
Location: Grand Manan,N.B.,Canada N44.40 W66.50
Boat: Mascot 28 pilothouse motorsailer 28ft
Posts: 2,657
Images: 1
Re: Gas hose length limitations?

https://www.aucklandgasservices.co.n...-lpg-compliant
__________________
My personal experience & humble opinions-feel free to ignore both
.
deblen is offline   Reply With Quote
Old 08-12-2022, 22:41   #13
Registered User

Join Date: Apr 2007
Location: Australia
Boat: Island Packet 40
Posts: 6,067
Images: 7
Re: Gas hose length limitations?

The steel or copper pipe requirement is probably do that if there's a fire in a compartment the gas line runs through, unlike a rubber hose, the pipe wont burn through and gas feed the fire.

I vaguely recall that in Australia you can use a hose as long as it does not exceed a certain length (Could be wrong, it's a pretty vague recollection)
__________________
Satiriker ist verboten, la conformitť est obligatoire
RaymondR is offline   Reply With Quote
Old 09-12-2022, 01:43   #14
Registered User

Join Date: Aug 2008
Boat: Trident marine Voyager 30
Posts: 744
Re: Gas hose length limitations?

Do it properly with copper pipes with proper connectors and short lengths of hose at the cooker and the regulator.

Would a long hose going through a bulkhead actually be legal in NZ?
Anders is offline   Reply With Quote
Old 09-12-2022, 02:33   #15
Registered User

Join Date: Jan 2018
Boat: 50ft Custom Fast Catamaran
Posts: 8,353
Re: Gas hose length limitations?

Quote:
Originally Posted by Anders View Post
Do it properly with copper pipes with proper connectors and short lengths of hose at the cooker and the regulator.

Would a long hose going through a bulkhead actually be legal in NZ?
I agree with this. That’s how I did my propane system. And it used to be much more extensive. It ran a refrigerator, a small heater, a cooktop.

The regulator and all of the connections off of it are located outside on deck in a vented deck box. Each appliance had its own run of copper.

two of those appliances had flare fittings on them ready to go. I really liked that and think all appliances should come that way. That meant there were no chances of leaks

The cooktop, however, required a short rubber hose connection at the end which I didn’t like as much. But it has lasted all these years. It’s the only thing that is still hooked up. The other ones were phased out.

A lot of people are anti-copper for some reason. I can’t figure it out. The stuff is fantastic and lasts decades without leaking. It may get ugly looking on the outside, but there is still a thick wall of metal there. I used it for my propane system and for my steering system. It works especially well for steering because it doesn’t expand and contract like a synthetic hoses do. It creates for more responsive and better working steering system. And in fact, my steering system is not warranted by the manufacturer unless you use copper.
Chotu is online now   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
luff length asym spinaker vs torsion line length waltdownunder General Sailing Forum 0 15-08-2022 21:00
Country? Berth cost, Boat Length or Berth Length? sailabroad Dollars & Cents 33 16-04-2018 07:12
Knowing Your Boat's Limitations . . . otherthan Monohull Sailboats 13 07-07-2010 04:45
Bosun's Chair Limitations? BubbleHeadMd Deck hardware: Rigging, Sails & Hoisting 19 27-12-2009 06:10
wind speed limitations michaelmrc Seamanship & Boat Handling 10 22-10-2008 11:07

Advertise Here


All times are GMT -7. The time now is 00:08.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.