Hose for Gas Hob

[bedouin]

What is the current recommendation for the tail connecting the (Gimballed) gas hob to the copper pipe from the gas cylinder?

Last time I replaced it the recommendation was armoured flexible hose but I had an idea that armoured hose was now out of fashion because it is difficult to inspect the hose inside. Is it now acceptable to go back to the old orange "rubber" hoses?

 

[Old Harry]

with armoured you cant inspect the pipe only the braided externals
I have high pressure orange hose & a gas cock

 

[vyv_cox]

See https://www.boatsafetyscheme.org/media/268789/ecp-private-boats-ed3_rev2_apr2015_public_final.pdf section 7.9. Armoured hose to the correct specification is perfectly acceptable.

 

[bedouin]

See https://www.boatsafetyscheme.org/media/268789/ecp-private-boats-ed3_rev2_apr2015_public_final.pdf section 7.9. Armoured hose to the correct specification is perfectly acceptable.

Thanks for that

If I read it correctly then correctly specified hoses are also acceptable - and I think I prefer those to the armoured type

 

[Seajet]

You can get flexible gas hose with the year printed on it cheaply from caravan shops.

I had a fire with a jet of flame behind the cooker on another boat which had the spiral armoured - not braided - flexible hose where one couldn't inspect the internal part, it certainly got my attention - I would only use the orange stuff now, and I change it every winter - it costs buttons so mad not to.

 

[steveeasy]

As stated above you can buy quite reasonably priced specific orange flexible hose that has the correct fitting at one end to fit to your stove. the length has a maximum length. I purchased mine from force 4, but caravan shops sell the same product.
Think this might be it.

https://www.force4.co.uk/force-4-gas-hose-assembly-orange-5-16-x30.html?sqr=gas fittings&

Steveeasy

 

[Seajet]

No special fittings on my gas hose, it just pushes onto ridged ends at the cooker and regulator, secured with stainless jubilee clips.

 

[vyv_cox]

secured with stainless jubilee clips.

Which the regulations specifically prohibit.

 

[Seajet]

What do ' they ' suggest then, hard to imagine anything better for the job - which regulations ?

My modern marine regulator seems intended for jubilee clips for a start, as does my admittedly older cooker - and I haven't blown up yet in 41 years of ownership, am very careful to turn the regulator off every second the cooker is not being used - as I've seen a mobo blow up via gas.

 

[vyv_cox]

What do ' they ' suggest then, hard to imagine anything better for the job - which regulations ?

My modern marine regulator seems intended for jubilee clips for a start, as does my admittedly older cooker - and I haven't blown up yet in 41 years of ownership, am very careful to turn the regulator off every second the cooker is not being used - as I've seen a mobo blow up via gas.

My apologies. Section 7.9.5 in the BSS link posted above does allow hose clips on suitable nozzles.

 

[Ruffles]

I think the fashion for armoured pipe came from an era when the rubber hoses were a lot thinner than they are now. I seem to remember the old pipe was stretchy, like the pipe on a school bunsen burner. The modern pipe you can happily hit with a hammer all day.

To my mind the danger with a gimballed stove is the twisting to the joints because the pipe is so stiff. Ours is connected to a fitting the same side as the cooker inlet. So the pipe runs across and then back in the hope that there's enough pipe to absorb the twist.

 

[Seajet]

Thankyou vyv,

you're a great engineer but some of us have had significant training and lives too - not many here nowadays I grant.

 

[doug748]

I had an armoured hose fail, was not very old and my cooker is normally in the locked position. So I don't have a great deal of trust in the stuff.

 

[vyv_cox]

I had an armoured hose fail, was not very old and my cooker is normally in the locked position. So I don't have a great deal of trust in the stuff.

That was unlucky. I replaced what was probably the original one on my boat at something like 20 years old, the replacement has been in for about 10 years. We very rarely use the gimbals though, so the stove is essentially fixed.
Also I have armoured stainless HP hoses on the gas bottles in my motorhome, they were installed when I bought the van 9 years ago. In the motorhome/caravan world this type is seen as being considerably superior to rubber hoses.

 

[Halo]

An obvious point to many but if your gas fitting has two cuts on each corner of the "nut" this usually indicates a left hand thread.