Gas pipe connection

lesweeks

lesweeks

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I'm installing a Plastimo butane cooker and need to make the final connection to orange gas hose. The hose is 8mm internal, which has been fine for other connections with hose-tails etc. but the tubing on the cooker, when measured with a vernier, is 7.5mm and even with two Jubilee type clips fitted I'm not 100% confident - the hose can still slide along the tube. Although it's in a position where it cannot be accidentally snagged I'm still not happy.
Is a 7.5mm OD tube standard? Can I get a compression fitting with a 8mm hose-tail?
Any ideas or suggestions will be welcome.
Les
 
lesweeks said:
I'm installing a Plastimo butane cooker and need to make the final connection to orange gas hose. The hose is 8mm internal, which has been fine for other connections with hose-tails etc. but the tubing on the cooker, when measured with a vernier, is 7.5mm and even with two Jubilee type clips fitted I'm not 100% confident - the hose can still slide along the tube. Although it's in a position where it cannot be accidentally snagged I'm still not happy.
Is a 7.5mm OD tube standard? Can I get a compression fitting with a 8mm hose-tail?
Any ideas or suggestions will be welcome.
Les
Click to expand...

It is more normal to use a compression fitting on the pipe coming out of the cooker and a proper premade hose with a screw fitting rather than a clipped plain hose. You can get all the fittings from Calor on the website PVB quotes. You can also get a detailed installation guide from them. If you want a safety certificate for your boat best to get the registered fitter to make the final connections.
 
Hi Les

I installed my Nelson Spinflow cooker last year and would suggest you connect to the cooker with braided hose pipe like this and as photos.

The braided pipe then connects to 8mm copper piping which runs back to the 'bubble detector' in my aft gas lockers, I only used the orange certified gas pipe from the detector to the gas bottle regulator.

Look here and here:-

http://www.marinechandlery.com/products/2120/390/gas/gas-hose-38-x-24-braided.aspx
http://www.gasproducts.co.uk/acatal...?utm_source=googlebase&utm_medium=feedmanager


Hope this helps
Mike
View attachment 27865 View attachment 27866
 
Hose from a cooker on a boat should be braided and with compression joints. The orange hose is only suitable for use from a bottle to regulator. The orange hose should also be on a barbed type fitting and not smooth copper pipe.
 
Boathook said:
Hose from a cooker on a boat should be braided and with compression joints. The orange hose is only suitable for use from a bottle to regulator. The orange hose should also be on a barbed type fitting and not smooth copper pipe.
Click to expand...

That could be your preference, but it isn't a requirement, even under BSS rules. Orange hose to BS3212 type 2 is perfectly acceptable for fitting a cooker, as long as the hose is less than 1 metre long and (obviously) protected from chafing.
 
lesweeks said:
I'm installing a Plastimo butane cooker and need to make the final connection to orange gas hose. The hose is 8mm internal, which has been fine for other connections with hose-tails etc. but the tubing on the cooker, when measured with a vernier, is 7.5mm and even with two Jubilee type clips fitted I'm not 100% confident - the hose can still slide along the tube. Although it's in a position where it cannot be accidentally snagged I'm still not happy.
Is a 7.5mm OD tube standard? Can I get a compression fitting with a 8mm hose-tail?
Any ideas or suggestions will be welcome.
Les
Click to expand...

The fitting You need for the hose is called a "Fulham" nozzle "

No way is it satisfactory to fit the hose onto plain copper tube, esp so loosely that it will stlll slide. BANG

I dont like the orange reinforced hose for LP connections. Its really HP hose.
It used to be possible to get black non-reinforced LP hose, more flexible and easier to push onto the fittings as it stretches a bit.

I dont know if the LP hose is still theoretically available or whether stockists just prefer to keep the one type.
 
VicS said:
The fitting You need for the hose is called a "Fulham" nozzle "
Click to expand...

Technically, and traditionally, perhaps, but many suppliers (including the Socal link I gave above) don't use that term any longer.


VicS said:
I dont know if the LP hose is still theoretically available or whether stockists just prefer to keep the one type.
Click to expand...

I suspect you're right about just stocking one type.
 
pvb said:
Technically, and traditionally, perhaps, but many suppliers (including the Socal link I gave above) don't use that term any longer.

I suspect you're right about just stocking one type.
Click to expand...


BES call them Fulham nozzles (I forget why so called ) Their section on "LPG Hoses, Nozzles, Clips & Pincers" on the website http://www.bes.co.uk/products/071.asp may well be of interest to the OP.

They do still list the LP hose. I notice that they also have nozzles for HP hose which should be better if the OP does want to use the orange hose
 
Thanks everyone for the advice and opinions.
As far as the hose is concerned, it's going to be the orange HP option because I've already completed all the pipe and hose work other than the final connection to the cooker.
The compression to hose-tail or (Fulham nozzle) is my favoured option, but I'm still puzzled by the tubing on the cooker - 7.5mm. 5/16" is the nearest (about 7.9mm equiv.) but will that pull down onto 7.5mm?
Do the French use different pipe sizes?
So many questions!
 
The hose connecting the cooker to the gas supply SHOUD BE braided hose, because that will protect the hose from any chafing (assuming that the cooker is gimballed).

As has been previously said orange hose should only be used from the gas botttle (regulator) to the pipework by way of purpose designed fittings on the pipework.

Just trying to clamp a rubber tube to a piece of gas pipe using two jublilee clips is asking for trouble.
 
Malcb said:
The hose connecting the cooker to the gas supply SHOUD BE braided hose, because that will protect the hose from any chafing (assuming that the cooker is gimballed).
Click to expand...

My cooker's gimballed, it has ordinary orange hose, and there's no way the hose can chafe on anything. Depends on the way it's fitted.
 
braided hose for BSC cert, but dated gas hose is fine for normal fitting.
Myself I have braided, easy to fit compression fittings. (against braided) it is known for the braid to cause damage to the rubber hose without beeing seen.
All hoses braided and rubber chafe just depends where they sit for long it takes.
 
ukmctc said:
braided hose for BSC cert, but dated gas hose is fine for normal fitting.
Click to expand...

If you mean the BSS (Boat Safety Scheme), braided hose isn't a requirement. The BSS requires cookers to be fitted with hose to BS3212 type 2 (see BSS 7.9.1), no more than 1 metre long (BSS 7.9.4), and the hose must be accessible for inspection and, for ordinary hose, must be fitted to suitable nozzles secured by crimped or worm-drive clips (BSS 7.9.5).
 
ukmctc said:
braided hose for BSC cert, but dated gas hose is fine for normal fitting.
Myself I have braided, easy to fit compression fittings. (against braided) it is known for the braid to cause damage to the rubber hose without beeing seen.
All hoses braided and rubber chafe just depends where they sit for long it takes.
Click to expand...

+1
 
Measured the pipe again - this time with a micrometer ........... 7.93mm. That's better, it's a 5/16ths compression fitting with a hose tail that's required. Already ordered.
Many thanks for the advice and the ensuing discussion.
For the record, my boat has a very small galley area and the Plastimo combined sink and double gas ring unit isn't on gimbals.
Les
 
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