Pipe sleeve's

[Backboiler]

I got the BG tight fitting sleeve from Plumbcenter. They don't stock it but I asked the rep and he got it me real cheap

 

[tweakyboy]

Just a quick one, I found this in BS6891:2005. Just to confirm that some types of waste pipe can be used as a sleeve, so no need to note anything down on CP12's etc.

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

 

[chris watkins]

Is ABS waste pipe still OK then ??

 

[SafeGasInstall]

It's not a grey area unfortunately it's in black and white.

If it makes sense or not may certainly be up for but debate but it definitely states all sleeves must be suitable for the safe carriage of gas.

I always use copper, seen loads of waste pipes and overflow used when doing CP12's and always gets noted.

A lot of specs for bigger jobs we do also state the sleeve should be two pipe sizes larger than the pipe passing through it. So for a 22mm pipe you'd use a 35mm sleeve, dont think that's anything to do with GSR though.

so fo the 1" you would have to use 2" copper for sleeving ?

 

[SafeGasInstall]

Just a quick one, I found this in BS6891:2005. Just to confirm that some types of waste pipe can be used as a sleeve, so no need to note anything down on CP12's etc.

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

so waist pipe can not be used ? what is waist pipe made off ,any one ?

 

[tweakyboy]

I doubt it, I suppose the only thing you could use is push fit waste pipe. Wasn't really thinking when I posted, but you can easily tell the difference between ABS/PVC

 

[Dannypipe]

Gonna say, I generally use copper to sleeve, but have used waste pipe. And two sized bigger seems excessive. But then that's just my opinion.

As for CP12#s, I'm just happy if I see a sleeve at all!! Probably a third (maybe more) of what I see in my area doesn't have one at all.

 

[tweakyboy]

so waist pipe can not be used ? what is waist pipe made off ,any one ?

ABS is normally solvent weld, but UPVC is sometimes used on solvent overflow pipe.

PVC is generally push fit waste pipe.

 

[SafeGasInstall]

i have used mainly 28mm copper but have used waist too ! lesson learned from today !!! hope every one will take a note too and we all have to agree the forum is the place to learn !!!

 

[kirkgas]

Nicro3 needing to use the same material for pipe and sleeve is not from the BS6891, so where are you quoting it from?


Sent from my iPhone using Tapatalk

 

[SafeGasInstall]

cheers kirk

 

[AlexGas]

I’m well aware of the BS info and wouldn’t use the waste pipe as the sleeve. But, I had a quick chat with GS inspector and ex BG engineer (not at the same time), both said it’s OK to use the waste pipe as the sleeve. How about that!? 😕

 

[nicro3]

Most generic commercial spec's, ie you would not run copper through a steel sleeve or vice versa (electrolic reaction) or run copper or steel through plastic sleeve in a fire rated wall for obvious reasons.

 

[Mike Jackson]

Just a quick one, I found this in BS6891:2005. Just to confirm that some types of waste pipe can be used as a sleeve, so no need to note anything down on CP12's etc.

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

Note that it says e.g. meaning for example so the list isn't a conclusive list just some examples of materials that are suitable. The salient part is the bit above that where it states that

Sleeves shall be of a material capable of containing gas

 

[Masood]

I’m well aware of the BS info and wouldn’t use the waste pipe as the sleeve. But, I had a quick chat with GS inspector and ex BG engineer (not at the same time), both said it’s OK to use the waste pipe as the sleeve. How about that!? 😕

Well I think that was addressed further up the thread - push-fit (PE/PVC) waste pipe is OK, but ABS isn't, if I've understood it correctly. Similar to what can & can't be used for D2 discharge on unvented cylinders.

 

[GrahamM]

Think some are becoming a bit pedantic here.
The purpose of a sleeve is to protect the pipe and contain gas in the extreme eventuality it was to leak inside the sleeve.
BS6891 states firstly the sleeve should be capable of containing gas eg. copper, steel, PE or PVC.

 

[AWheating]

you may also need to consider the fire rating of the wall you are going through.

 

[smhstu]

So why when you get a inset meter box the sleeve is made from fibreglass ?

 

[Billy Bob Bob]

So why when you get a inset meter box the sleeve is made from fibreglass ?

and the supply pipe to the ecv is plastic