Gas pipe sleeve for 28mm

[Millsy 82]

What do you use to sleeve 28mm pipe? Years ago I used to use 1 1/4" pipe. But you shouldn't use that as it should be suitable for carrying gas?

 

[AlexGas]

What do you use to sleeve 28mm pipe? Years ago I used to use 1 1/4" pipe. But you shouldn't use that as it should be suitable for carrying gas?

You’ll be fine with the push fit one, not the solvent weld.

 

[Millsy 82]

You’ll be fine with the push fit one, not the solvent weld.

Why push fit and not solvent weld?

 

[Irish]

What do you use to sleeve 28mm pipe? Years ago I used to use 1 1/4" pipe. But you shouldn't use that as it should be suitable for carrying gas?

I buy 35mm pipe by the metre for this purpose , feel like a right diyer buying a metre of pipe though !

 

[lambchop]

Why push fit and not solvent weld?

different size internal diameter, i think

 

[AlexGas]

Why push fit and not solvent weld?

From BS 6891
Installation of low pressure gas pipework of up to 35 mm (R1¼) in domestic premises (2nd family gas) — Specification

8 Installation
...
8.10 Sleeves
8.10.1 Sleeves shall be of a material capable of containing gas, e.g. copper, steel, polyethylene or polyvinyl chloride (PVC).

Here's polyethylene pipe, comes in grey and white:
Wavin Osma 5w073g polyethylene pipe bs5254 40mm x 3mtr Grey

Here's PVC-U:
http://www.NoLinkingToThis/p/push-fit-pipe-40mm-x-3m-white/65426

PVC is Poly Vinyl Chloride
UPVC or PVC-U is Unplasticized Poly vinyl chloride.
UPVC is known as having strong resistance against chemicals, sunlight and oxidation from water.

Solvent weld waste pipe is made from ABS, which is Acrylonitrile Butadiene Styrene. There's nothing in the BS about ABS.
Not sure if answered your question, I guess ABS pipe would give us some issues in this case.

Well... Also my college teacher - ex BG has told me that push fit pipe is good to go for sleeving.

 

[lambchop]

Nice one Alex, rarely do installs so normally use copper will remember push fit in future

 

[Ermintrude]

Thought it was supposed to be fire proof we always sleeve with copper and donky plick. Un like national grid on an undersized re run

So sleeve was 100mm at best on a 375 wall

 

[Masood]

Thought it was supposed to be fire proof we always sleeve with copper and donky plick.

Donkey plick???

 

[Billy Bob Bob]

Thought it was supposed to be fire proof we always sleeve with copper and donky plick. Un like national grid on an undersized re run

So sleeve was 100mm at best on a 375 wall

does not have to be fireproof,asked gassafe this question recently

 

[villa_tom]

Donkey plick???

Flue jointing compound to you and me

 

[Billy Bob Bob]

Donkey plick???

you have to remember em does not speak English as we know it,its more cockney rhyming slang crossed with a martian with no tongue and laryngitis

 

[Linkyplumb]

personally I do all mine in copper or iron. If plastic is used, and some numpty goes in after, they do not know if is pvc or abs, there is no mistaking iron or copper. Obviously gets a bit expensive in the 35 or 42 mm sizes

 

[goz666]

I always use plastic, which is more than most seem to do !!!

 

[Ermintrude]

Do u drill a 28mm hole then cut plastic along its length and shove it in? Not seen that before

 

[goz666]

I drill 32mm with core drill. Sleeve through full length and then 28mm through that.

 

[Billy Bob Bob]

personally I do all mine in copper or iron. If plastic is used, and some numpty goes in after, they do not know if is pvc or abs, there is no mistaking iron or copper. Obviously gets a bit expensive in the 35 or 42 mm sizes

you cant sleeve copper with iron though differential corrosion

 

[stevetheplumber]

Solvent weld pipe can be pvc or abs so unless its abs it can be used as sleve

 

[AlexGas]

Solvent weld pipe can be pvc or abs so unless its abs it can be used as sleve

Yes, some waste pipe is made from MuPVC, that’s Modified Unplasticised Polyvinyl Chloride. MuPVC, DOH! It doesn’t mean much to me!?
Solvent weld ABS pipe is not greasy. Polyethylene pipe is greasy, same as yellow gas mains pipe or MDPE pipe. PE stands for polyethylene.
Is PP (Polypropylene) pipe any good? Doesn’t look like it.
We should stick to copper, steel, polyethylene or polyvinyl chloride.
Or is it time to send another pigeon to GasSafe!?

 

[AlexGas]

The sleeve for the TracPipe® should be made of a material that is itself capable of containing gas, for example, steel, copper or polyethylene. However, polyvinyl chloride (PVC) sleeves should not be used with TracPipe® as it may cause corrosion of any exposed corrugated stainless steel tube.

 

[jonny5isalive]

Just pulled some 35mm out of a job im going to keep just for this.

 

[REDSAW]

a sleave is a sleave, to protect from errosion and the cavity then encapsulate any escaping gas to outside.!.

 

[Reg Man]

Plastic waste pipe is just fine.

 

[village idiot]

So if you attend and a gas pipe has been sleeved in plastic, do you then spend time to determine if the plastic is solvent weld or push fit?

 

[REDSAW]

could always take a forensic sample to be sure.!

 

[jonny5isalive]

Or burn it with acid and check results

 

[REDSAW]

plastics got no scrap value!

 

[AWheating]

always best if the sleeve is as strong or stronger than the pipe going through it IMPO. abs should be avoided.

i wonder if waste pipe has been tested for gas permeability or whatever the term is.

 

[Reg Man]

Fibreglass or plastic sleeves are used on service pipes coming out of the ground and the back of meter housings.
Plastic coated copper with intersees are also acceptable methods of sleeving.

 

[stratplus]

always best if the sleeve is as strong or stronger than the pipe going through it IMPO. abs should be avoided.

i wonder if waste pipe has been tested for gas permeability or whatever the term is.

So do you order copper sleeving then?? Or use the solvent waste pipe they send like the rest of us