Replacing Cooker Gas Hose

[emandvee44]

I took the cooker hose off as it is 6 years old and is slightly kinked anyway. I am confident that I can replace the hose and make leak tests.
How do I order a replacement?
It is 80cm long.
When I look on line, eg in ASAP supplies, it shows a hose with the spigots but without the nut and olive. Also the size is 8mm but UK suppliers quote 5/16".

Any advice please.

Cheers,

Michael.

 

[sailorman]

8m/m & 5/16 are the same really size .
the new one will not have the nut & olive as the original . because once the nut is tightened it then becomes "captive" due to the compressed olive.
you do not these days need to have so called armoured flexible hoses, as these are std pipes encased, one cant carry out a visual inspection of the pipe.
when ordering get new olives & reuse the old nuts

 

[prv]

As sailorman says, the nut and olive are technically part of the compression fitting at each end, not the hose, although they become attached to the hose once it's fitted. You can either buy a couple of new olives and cut the spigots on the old pipe to release the nuts, or buy a cheap compression fitting, use the nuts and olives from it, and discard the fitting itself.

Pete

 

[Cloven]

As sailorman says, the nut and olive are technically part of the compression fitting at each end, not the hose, although they become attached to the hose once it's fitted. You can either buy a couple of new olives and cut the spigots on the old pipe to release the nuts, or buy a cheap compression fitting, use the nuts and olives from it, and discard the fitting itself.

Pete

....and seriously consider using some gas leak detector spray or liquid after fitting to check the gas tighness of the joints

http://www.bes.co.uk/products/051.asp#11721

 

[Skylark]

I did something similar on my last boat. Southampton Calor Gas seems to get a lot of recommendations on here so I simply put my old hoses in a jiffy bag and sent them by post. Very good service in return.

 

[charles_reed]

My boat is due for an insurance survey, this year.
One of the things one always gets caught out on is age of LPG hoses.
It used to be 5 years.
UKgov has reduced that to 2 years and the authoritative UL21 specification wants you to part with much money to get it. Gates infer 3 years for their HP LPG hose.
Just a note of warning...

 

[sailorman]

My boat is due for an insurance survey, this year.
One of the things one always gets caught out on is age of LPG hoses.
It used to be 5 years.
UKgov has reduced that to 2 years and the authoritative UL21 specification wants you to part with much money to get it. Gates infer 3 years for their HP LPG hose.
Just a note of warning...

Hoses have the manufacture date on them with nothing to tell WHEN they were fitted

 

[Stoshak]

If you remove the stainless cuff by filing or grinding, you will be able to pull the end fitting from the inner rubber tube.

You can then re-use the fittings with new pipe and jubilee clips, clips and 8mm tube from ASAP.

And leak test obviously.

 

[charles_reed]

Hoses have the manufacture date on them with nothing to tell WHEN they were fitted

Unfortunately, the surveyor tends to assume the date on the hose was the date of fitting. Can be quite embarrassing as the underwriters tend to suspend cover for fire and explosion until the hose is replaced.

 

[emandvee44]

Thanks everyone.
I am going to order a new hose and a leak detection kit (I know - soap and water is cheaper) , cut off the spigots from the old hose to recover the nuts, and go into the local market to buy the olives.
If I am still posting on here in a few weeks time you will know I have been successful

Thank you,

Michael.

 

[VicS]

Thanks everyone.
I am going to order a new hose and a leak detection kit (I know - soap and water is cheaper) , cut off the spigots from the old hose to recover the nuts, and go into the local market to buy the olives.
If I am still posting on here in a few weeks time you will know I have been successful

Thank you,

Michael.

copper olives recommended for gas .... not brass ...... or the vegetable type

 

[nigelmercier]

....and seriously consider using some gas leak detector spray or liquid after fitting to check the gas tighness of the joints

http://www.bes.co.uk/products/051.asp#11721

I used the Cura atomiser type last week. It wasn't particularly user friendly, I expected a colour change in the presence of gas.

 

[sailorman]

Unfortunately, the surveyor tends to assume the date on the hose was the date of fitting. Can be quite embarrassing as the underwriters tend to suspend cover for fire and explosion until the hose is replaced.

So much for the knowledge base of some boat surveyors

 

[VicS]

I used the Cura atomiser type last week. It wasn't particularly user friendly, I expected a colour change in the presence of gas.

Colour change? Really?

 

[DickB]

I bought mine from YouBoat in Gosport, off the shelf. Easy except I forgot the olives so I've got to go back there soon...

cheers

 

[nigelmercier]

Colour change? Really?

I figured that was why it was yellow, like pH paper. Otherwise, why is it better than washing-up liquid.

It doesn't seem to form bubbles, so I'm not sure what I was looking for. I guess that means the joints were all OK, but one was very loose until I remade it with a washer under the flange.

 

[Ardenfour]

Apart from flexing, a rubber hose will perish whether connected or lying on the shelf, so date of manufacture sort of makes sense.

 

[VicS]

I figured that was why it was yellow, like pH paper. Otherwise, why is it better than washing-up liquid.

It doesn't seem to form bubbles, so I'm not sure what I was looking for. I guess that means the joints were all OK, but one was very loose until I remade it with a washer under the flange.

They say washing up liquid is corrosive.

I'd be looking for bubbles.

 

[nigelmercier]

They say washing up liquid is corrosive.

I'd be looking for bubbles.

Yes, they do, don't they. I was actually looking for bubbles, having tested that the liquid didn't do anything spectacular in the presence of gas. However the film was so thin that I wasn't even sure if I had wet the fitting in some places. Most of the fittings are difficult to view directly, I spayed a lot of liquid onto my mirror

 

[GrahamM376]

Hoses have the manufacture date on them with nothing to tell WHEN they were fitted

Ours have the expiry date printed on, not manufacture date.