Solvent welding different types of pvc

[Tezzer2022]

Hello,
Do different PVC pipes I.E PVC and muPVC weld directly together?
Regards
Tezzer

 

[gmartine]

I'd expect so, they are only PVC variants.

To check put a small dab of solvent on the exterior of each material and see if the surface starts to dissolve. If both have you should be fine.

 

[Tezzer2022]

I'd expect so, they are only PVC variants.

To check put a small dab of solvent on the exterior of each material and see if the surface starts to dissolve. If both have you should be fine.

They seemed to weld well when I connect them. I couldn’t find a definitive answer online so thought I’d ask the question. I think you’re right though, given that they both come under the pvc umbrella.
Thanks Martin.

 

[ShaunCorbs]

Mupvc requires a different glue if you need the temp rating normal / stnd poly pipe glue softens under hot

 

[Tezzer2022]

Mupvc requires a different glue if you need the temp rating normal / stnd poly pipe glue softens under hot

The black swan cement is compatible with pvc, muPVC and even abs. The error I made is using pvc pipe not knowing the pipe I was connecting to was muPVC. I didn’t expect muPVC in a residential flat. So basically just trying to understand if I need to rip things out to change. Difficult but potentially doable. All seems ok in terms of testing for leaks.

 

[ShaunCorbs]

Yes will be ok upto 70 c

 

[Tezzer2022]

Yes will be ok upto 70 c

Yes will be ok upto 70 c

Thanks Shaun, that’s good to know.
What confuses me is that pvc seems to be the general pope used in residential dwellings which as you say is good upto 70c. How does pvc cope with domestic washing machines which have 95c cycles. Or is it when it’s constant heat?

 

[ShaunCorbs]

Thanks Shaun, that’s good to know.
What confuses me is that pvc seems to be the general pope used in residential dwellings which as you say is good upto 70c. How does pvc cope with domestic washing machines which have 95c cycles. Or is it when it’s constant heat?

They get a bit soft / bendy if you put 95c water down them

 

[Tezzer2022]

They get a bit soft / bendy if you put 95c water down them

I can imagine
I’m surprised that muPVC isn’t the standard used as opposed to pvc. I see people all the time pouring boiling water down pipes

 

[ShaunCorbs]

Mupvc is non standard / special order where as pvc / abs is standard you can buy it anywhere etc

 

[gmartine]

I can imagine
I’m surprised that muPVC isn’t the standard used as opposed to pvc. I see people all the time pouring boiling water down pipes

It'll only be in contact for a fraction so wont have much if any effect. Same goes for the washing machine, bet by the time it hits any pvc that might be affected would've cooled down some. Mind you, a washing machine waste hose is usually made of polyprop and that only has recommended operating temp of about 80 degC.

 

[Tezzer2022]

It'll only be in contact for a fraction so wont have much if any effect. Same goes for the washing machine, bet by the time it hits any pvc that might be affected would've cooled down some. Mind you, a washing machine waste hose is usually made of polyprop and that only has recommended operating temp of about 80 degC.

Thanks Martine
Makes good sense. Appreciate it.