25mm mdpe yellow gas pipe to 22mm copper

Vinpetrol

Vinpetrol

Well-known member
I bought a coil of yellow 25mm mdpe pipe for gas at my static caravan . At the van I needed to switch from the 25mm mdpe to 22mm copper .
The plumbers merchant I bought the pipe from sold me this to do the transition . I used it but I’m not certain that it is actually for gas and that it might be a water fitting . It doesn’t say either on the website . Anyone got any idea ?
Cheers
 
S

Stroppymonkey

Well-known member
I bought a coil of yellow 25mm mdpe pipe for gas at my static caravan . At the van I needed to switch from the 25mm mdpe to 22mm copper .
The plumbers merchant I bought the pipe from sold me this to do the transition . I used it but I’m not certain that it is actually for gas and that it might be a water fitting . It doesn’t say either on the website . Anyone got any idea ?
Cheers
First things first. Get a Gas Safe Engineer to do it!

EDIT - You need to get a Gas Safe Engineer to connect and commission, following advice is only to assist you getting the groundworks and materials ready on site. Please dont connect yourself.

HDPE (its not MDPE IIRC) should never be above ground, however you should never bury table X copper.
Try one of these to do it properly...with a GRP hockey stick over the LPG HDPE.


Or one of these..


Or these work just fine but not sure if rated for LPG.

Or these... but I always feel expensive.

And the one you were supplied with is NOT for LPG!
 
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Vinpetrol

Vinpetrol

Well-known member
First things first. Get a Gas Safe Engineer to do it!
Right.. legal bollocks out of the way..
HDPE (its not MDPE IIRC) should never be above ground, however you should never bury table X copper.
Try one of these to do it properly...with a GRP hockey stick over the LPG HDPE.


Or one of these..


Or these work just fine but not sure if rated for LPG.

Or these... but I always feel expensive.

And the one you were supplied with is NOT for LPG!
I'm annoyed that the fittings I got from plumb Center when I bought the pipe were wrong but I suppose if I was a gas fitter I'd of known they were wrong !
regarding getting a gas safe fitter I will be for the house as I will have an lpg gas hob but the static is temporary and came fully plumbed for gas and I also got the changeover kit that was with it as well so all I needed to do was put a bit of 25 mm hdpe in the ground in line so I didn't think it was too big a deal .
I've found these fittings on line that are for lpg and look like they will work. What do you think ? (I will check for leaks once it's all connected up )


I will slide some gas pipe ducting down over the exposed hdpe before joint it back up .
 
pettsy

pettsy

Well-known member
regarding getting a gas safe fitter I will be for the house as I will have an lpg gas hob but the static is temporary and came fully plumbed for gas and I also got the changeover kit that was with it as well so all I needed to do was put a bit of 25 mm hdpe in the ground in line so I didn't think it was too big a deal .
I've found these fittings on line that are for lpg and look like they will work. What do you think ? (I will check for leaks once it's all connected up )

Don’t take this the wrong way, but the consequences for getting it wrong aren’t just like getting wet if it was a water pipe. I assume you’re wanting to connect it to an existing tank? How will you be testing it, do you have a manometer? As a gas safe registered engineer it just rings alarm bells 😬
 
S

Stroppymonkey

Well-known member
I'm annoyed that the fittings I got from plumb Center when I bought the pipe were wrong but I suppose if I was a gas fitter I'd of known they were wrong !
regarding getting a gas safe fitter I will be for the house as I will have an lpg gas hob but the static is temporary and came fully plumbed for gas and I also got the changeover kit that was with it as well so all I needed to do was put a bit of 25 mm hdpe in the ground in line so I didn't think it was too big a deal .
I've found these fittings on line that are for lpg and look like they will work. What do you think ? (I will check for leaks once it's all connected up )


I will slide some gas pipe ducting down over the exposed hdpe before joint it back up .
Looks good. Would be best to get the GRP hocky stick that fits it as well - gives you a nice radius bend upto the fitting and takes the stress off the joint. Once you have it all up and running PLEASE get it checked over. Not sure what age/spec your static is, but open flue fires are potentially lethal little things. Ive seen some horribly dangerous ovens, and water heaters can spill. Hopefully yours is a newer one with a fan flue combi and electric oven/fire. Less to try and kill you with those, but flues often damaged during transport which can create unsafe situations. Been working on statics and park homes for 20 years and see some scary stuff. People DO die in them of CO... So my honest and best advise is not to take the risk and get a LPG qualified Gas Safe Engineer in to recommission appliances and check everything . Dont forget at least one CO alarm. Your changeover valve will need to have an OPSO on it, or throw it in the bin. Gas Works fall firmly under HSE and it is easy to be prosecuted if anything goes wrong. IMHO Gas fittings shouldn't be sold to anyone without a Gas Safe ID number :)
 
Vinpetrol

Vinpetrol

Well-known member
Don’t take this the wrong way, but the consequences for getting it wrong aren’t just like getting wet if it was a water pipe. I assume you’re wanting to connect it to an existing tank? How will you be testing it, do you have a manometer? As a gas safe registered engineer it just rings alarm bells 😬
No it's LPG. It has a Cleese changeover valve/regulator. It connects to a calor gas bottle . Gas engineers are like hens teeth here !
 
pettsy

pettsy

Well-known member
If it’s connecting to bottles why do you need to bury any pipework? Wouldn’t you just have a couple of bottles next to the caravan with the changeover valve? Would still need G/S guy to pipe up changeover valve.
 
S

Stroppymonkey

Well-known member
No it's LPG. It has a Cleese changeover valve/regulator. It connects to a calor gas bottle . Gas engineers are like hens teeth here !
presumably you are putting the LPG cylinders remotely from the static? LPG pipe should be buried in a 63mm yellow perforated pipe with magnetic marker tape :)
 
Vinpetrol

Vinpetrol

Well-known member
Looks good. Would be best to get the GRP hocky stick that fits it as well - gives you a nice radius bend upto the fitting and takes the stress off the joint. Once you have it all up and running PLEASE get it checked over. Not sure what age/spec your static is, but open flue fires are potentially lethal little things. Ive seen some horribly dangerous ovens, and water heaters can spill. Hopefully yours is a newer one with a fan flue combi and electric oven/fire. Less to try and kill you with those, but flues often damaged during transport which can create unsafe situations. Been working on statics and park homes for 20 years and see some scary stuff. People DO die in them of CO... So my honest and best advise is not to take the risk and get a LPG qualified Gas Safe Engineer in to recommission appliances and check everything . Dont forget at least one CO alarm. Your changeover valve will need to have an OPSO on it, or throw it in the bin. Gas Works fall firmly under HSE and it is easy to be prosecuted if anything goes wrong. IMHO Gas fittings shouldn't be sold to anyone without a Gas Safe ID number :)
I will get it checked . As soon as I can get a gas safe engineer engaged to do the hob supply in the house I will get him out to check the static . I won't be living in It before then . I don't know how the LPG pipe should come in through floor slab so I need to appoint engineer to advise how he wants this done so that needs to be very soon . The static is a 2015 with combi boiler . Ive known it from new and its had very little use . The changeover valve is a Cleese 200 compact.
 
S

Stroppymonkey

Well-known member
I will get it checked . As soon as I can get a gas safe engineer engaged to do the hob supply in the house I will get him out to check the static . I won't be living in It before then . I don't know how the LPG pipe should come in through floor slab so I need to appoint engineer to advise how he wants this done so that needs to be very soon . The static is a 2015 with combi boiler . Ive known it from new and its had very little use . The changeover valve is a Cleese 200 compact.
You cant bring the LPG in through the slab. that is a massive NoNo. Needs to come up wall external with an ECV.
 
Vinpetrol

Vinpetrol

Well-known member
You cant bring the LPG in through the slab. that is a massive NoNo. Needs to come up wall external with an ECV.
in the distant past gas fitter advised for a kitchen island with hob to take duct all the way in to island through the slab and then take the other end above ground externally so if gas gets into duct then it's vented.
how would you take LPG gas to an island hob under current regs?
 
S

Smiffy

Well-known member
in the distant past gas fitter advised for a kitchen island with hob to take duct all the way in to island through the slab and then take the other end above ground externally so if gas gets into duct then it's vented.
how would you take LPG gas to an island hob under current regs?

You bring gas up outside house to meter then internal pipes are a different matter. Otherwise any leaks in the entire gas network have the potential to vent into your house. Gas tracks down the outside of pipes for miles in the ground.
 
Vinpetrol

Vinpetrol

Well-known member
You bring gas up outside house to meter then internal pipes are a different matter. Otherwise any leaks in the entire gas network have the potential to vent into your house. Gas tracks down the outside of pipes for miles in the ground.
All the stuff up here is LPG bottle gas as no mains gas rurally so no meters
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
I don't know whether the government regulations would be thoughtful enough to account for the source of the gas.
are they " Government reg.s " or industry led reg.s, C.O.P.,s, etc.. ? :unsure:
 
S

Stroppymonkey

Well-known member
Building regulations. part L I believe. But might be under another section for ducting into a house.
I'd have to dig them out. Mix of British standards and building regs part J?? I am oddly always crap at recalling reg sources.

For a gas or LPG hob on an kitchen island you would use a wrapped copper pipe (or track pipe) in the installation or screed layer (NOT in the slab) and joint above floor or externally. You 100% do not bring HDPE up through the slab.
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
Building regulations. part L I believe. But might be under another section for ducting into a house.
just been googling who's responsible for all this crud and actually getting to the root of who's responsible is not easy .. did find this but does not say what 'laws' govern this
https://www.gov.uk/find-licences/registration-to-carry-out-gas-work
yet another money making scheme
whilst I appreciate that combustible gas of any kind can be seriously dangerous, in the wrong/uninformed/untrained hands and I am not knocking some form of accreditation for those dealing with it, it certainly smacks of 'creaming' the industry yet again.
Gas Safe Register appears much like the card schemes and privately run from PO Box 6804, Basingstoke, Hampshire, RG24 4NB .. if you don't pay to 'be in the club' - even though you may be even more proficient than those that do you'm buggered :mad:
 
S

Smiffy

Well-known member
just been googling who's responsible for all this crud and actually getting to the root of who's responsible is not easy .. did find this but does not say what 'laws' govern this
https://www.gov.uk/find-licences/registration-to-carry-out-gas-work
yet another money making scheme
whilst I appreciate that combustible gas of any kind can be seriously dangerous, in the wrong/uninformed/untrained hands and I am not knocking some form of accreditation for those dealing with it, it certainly smacks of 'creaming' the industry yet again.
Gas Safe Register appears much like the card schemes and privately run from PO Box 6804, Basingstoke, Hampshire, RG24 4NB .. if you don't pay to 'be in the club' - even though you may be even more proficient than those that do you'm buggered :mad:

Different things apply to different people. We did some trenching for new gas supplies to 3 static caravans but the actual pipework was carried out by someone with a gno qualification rather than gas safe. I don't know where the boundary is between gno and gas safe.
 
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