Help identifying type of pipe system

[Sergiu Grosu]

Can anyone identify this adapter? It's 22mm copper to an unknown plastic piping system (non-standard size, I think it's 25mm or similar). It's on an older UFH system.

Failing that, any alternative suggestions are welcome. I need to replace the mixing valve and the manifold, so due to the new mixing valve being slightly different size, I need to adjust the pipework to accomodate it. I'd rather work in 22mm copper, but I need some adapters to go from the non-standard system to 22mm copper, as replacing all the pipe is not an option.

Thanks

 

[Chuck]

If this in the UK?

25mm od is a standard size for metric plastic pipe, but I've not seen it used in domestic heating. With any luck someone will tell us that I'm wrong but, to me, that looks remarkably like 25mm overflow pipe, or possibly electrical conduit, and the 25/22mm adaptors look very like the slightly soft sleeves used to terminate washing machine drain hoses.

Does the installation have any paperwork available? E.g. the quote / invoice from when it was installed.

 

[Gasmk1]

If this in the UK?

25mm od is a standard size for metric plastic pipe, but I've not seen it used in domestic heating. With any luck someone will tell us that I'm wrong but, to me, that looks remarkably like 25mm overflow pipe, or possibly electrical conduit, and the 25/22mm adaptors look very like the slightly soft sleeves used to terminate washing machine drain hoses.

Does the installation have any paperwork available? E.g. the quote / invoice from when it was installed.

i don’t think this is uk based

 

[Sergiu Grosu]

If this in the UK?

25mm od is a standard size for metric plastic pipe, but I've not seen it used in domestic heating. With any luck someone will tell us that I'm wrong but, to me, that looks remarkably like 25mm overflow pipe, or possibly electrical conduit, and the 25/22mm adaptors look very like the slightly soft sleeves used to terminate washing machine drain hoses.

Does the installation have any paperwork available? E.g. the quote / invoice from when it was installed.

Yes, this is from a property in London. There is no paperwork available, as the installation was done 10-15 years ago and the property got sold several times in the meantime. Do you guys know of any solvent weld fittings strong enough to work on such a heating system? If I can find some 25mm to 22mm ones or make some adapters, I could then work in 22mm copper to complete the work.

 

[Timmy D]

I could be wrong but it’s likely Hunter Genova, cpvc pressure pipe. Still in use in America, no longer used over here.

cpvc can become brittle over time and I’d be careful when working on it. Due to the high pressure when compared to our solvent weld wastes, the solvent needs 24hrs to cure.

I wouldn’t be trying to find cpvc fittings/pipe etc, I’d be using a transition fitting and converting as much to modern push fit plastics or copper.

I’d honestly want to rip it all out. If not, any transitions should be left accessible.

If unscrewing any fittings, make sure to brace the pipe to reduce the risk of breaking it at the next fitting.

Pilmac transition couplings work but are bulky.

If you check the od, the pipe is larger than its equivalent in copper or push fit. However, the walls are quite thick and should have enough meat on them for you to file/sand the OD down by about 0.5mm. Once sanded, modern pushfit like grey polyplumb or hep20 should fit as a transition.

This is advice, might be completely wrong but I would plan to use a third party transition coupling and have a back up plan.

Use this information at your own risk!

 

[king of pipes]

It is Hunter Genova fittings are available but you need to hunt for them online this may work for you could transition from cpvc to copper . Kop

 

[ShaunCorbs]

It’s a bdyj to work with best to repipe

 

[Sergiu Grosu]

It is Hunter Genova fittings are available but you need to hunt for them online this may work for you could transition from cpvc to copper . Kop

Thanks a lot.

Based on the pictures I attached, Genova pipe is slighly larger that the 22mm copper. So my thinking is that's it's 1" pipe (25.4mm) as opposed to 3/4" (19.05mm), unless the sizing is not based on OD.

Could you help me decide what size fitting I need? In case it's 1" indeed, this seems to be the right part for the job, but I can't find it in the UK.

 

[ShaunCorbs]

3/4 measures 1” od
1” measures 11/4 od

 

[Sergiu Grosu]

Thank you. Any solvent recommendations?

 

[ShaunCorbs]

CPVC Cement (Orange) - Medium Bodied - Chicago-Illinois-National-International

Black Swan's ABS Cement - Medium is a black, medium bodied, medium to fast set, high strength ABS solvent cement used to join ABS pipe and fittings. For all classes and schedules through 6

www.blackswanmfg.com

 

[Sergiu Grosu]

Right. It doesn't look like anybody in the UK sells any CPVC cement. I can't find it anywhere. The only thing that says CPVC on it is the Polypipe Solvent Cement, but it says it's only for non-pressure systems, so I don't think that'll work either.

Any suggestions?

 

[ShaunCorbs]

CPVC SOLVENT CEMENT

IPS Weld-On 724 PVCC Solvent Cement

www.ipsflowsystems.com

Solvent Cement

Spears CPVC FS5 One Step Cement - Pint Tin (473ml)

www.ipsflowsystems.com