upvc piping mods

Joined
25 Aug 2004
Messages
727
Reaction score
21
Location
Cornwall
Country
United Kingdom
1 by mrcrow_uk, on Flickr

2 by mrcrow_uk, on Flickr

3 by mrcrow_uk, on Flickr

in my garage are two pipes for the laundry and are in grey upvc? plastic

i want to cut into and extend the cold so i can fit a garden tap at the front of the garage so i dont have to drag the hose round the front from the tap at the back outside of the property

this piping must be a bit old because i had my kitchen renewed and the "plastic" piping for that is white.

i would like to convert the 90* bend to an equal tee and so run the new piping about 2-3m and end in a standard garden tap to take my click on hose reel system near the up and over door end.

the cold tap for the washing machine seems to fit via an copper olive type compression fitting, and i have some spare compression bends i could use if possible

the two laundry pipes are from piping near the central heating boiler and have isolating valves fitted to them so i can shut down the cold to do this job.

cheers
geof
 
Sponsored Links
If your question is "can this be done" then the answer is 'yes'.
The plastic pipe is not old because it is grey, it is just a different brand/system!
Whether using compression or pushfit you will need to buy inserts for the pipe you have, to use at every connection - I.e you will need 3 inserts for a T and 2 for an elbow!
I would also lag the pipework where it is at risk of freezing and also a lever valve inside to shut off supply to the outside tap for the winter months and you will also need to put in a non-return valve in the pipework to the outside tap to comply with water regs.
 
If your question is "can this be done" then the answer is 'yes'.
The plastic pipe is not old because it is grey, it is just a different brand/system!
Whether using compression or pushfit you will need to buy inserts for the pipe you have, to use at every connection - I.e you will need 3 inserts for a T and 2 for an elbow!
I would also lag the pipework where it is at risk of freezing and also a lever valve inside to shut off supply to the outside tap for the winter months and you will also need to put in a non-return valve in the pipework to the outside tap to comply with water regs.

thanks...i put a water tap in my old house and i will use the same one...it has a non return valve in it
glad you reminded me about that
what is that grey piping know as and can i use an olive to fit onto any brass compression fittings...which i have spare in my kit
cheers
geof
 
Sponsored Links
i put a water tap in my old house and i will use the same one...it has a non return valve in it
glad you reminded me about that

That doesn't comply with water regs. The double check valve is required to be internal

Jon

54792.jpg

Hose Union Bib Tap with Double Check Valve 1/2" DZR to BS 1010 part 2

it will be this one from toolstation...is that ok?

cheers
geof
 
Last edited:
i put a water tap in my old house and i will use the same one...it has a non return valve in it
glad you reminded me about that

That doesn't comply with water regs. The double check valve is required to be internal

Jon

54792.jpg

Hose Union Bib Tap with Double Check Valve 1/2" DZR to BS 1010 part 2

it will be this one from toolstation...is that ok?

cheers
geof

No, you are required to have a double check valve inside the property to comply with water regs.

Jon
 
@mrcrow Find attached the water regs for an outside tap. Note that the Double check valve is required to be internal to be protected against freezing and that insulation is not classed as a protection against freezing only a delay against freezing. The check valve should be in a heated part of the property or provision made to ensure that freezing cannot occur.

Jon

Outside Tap Water Regs 1999.jpg
 
@mrcrow Find attached the water regs for an outside tap. Note that the Double check valve is required to be internal to be protected against freezing and that insulation is not classed as a protection against freezing only a delay against freezing. The check valve should be in a heated part of the property or provision made to ensure that freezing cannot occur.

Jon

View attachment 99605

that is pretty clear
the tap will be installed inside my garage...do you think it will be ok there in frost conditions?
i can put a frost cover on it...otherwise...where should i fit the required double check valve...the source of the cold supply is from the central heating boiler in the cupboard where its situated...and also used as a airing cupboard...there is an isolation valve there so i could cut into the pipe at that area and it would certainly not ever freeze
the rest of the pipework is all inside the garage which is attached to the house and fairly cool but has never shown signs of freezing
cheers
geof
 
can i use an olive to fit onto any brass compression fittings

Yes, copper olive preferably and also the correct insert for the pipe.

(y)
Looks like poly pipe or hep.
OP: does the plastic pipe have anything printed along it that would indicate the brand?

yes here we are...
P44 by mrcrow_uk, on Flickr

and thanks for your help

cheers
geof

Ok, polyplumb. So you need these...
https://www.google.co.uk/search?q=polyplumb+pipe+inserts&ie=UTF-8&oe=UTF-8&hl=en-gb&client=safari
 
can i use an olive to fit onto any brass compression fittings

Yes, copper olive preferably and also the correct insert for the pipe.

(y)
Looks like poly pipe or hep.
OP: does the plastic pipe have anything printed along it that would indicate the brand?

yes here we are...
P44 by mrcrow_uk, on Flickr

and thanks for your help

cheers
geof

Ok, polyplumb. So you need these...
https://www.google.co.uk/search?q=polyplumb+pipe+inserts&ie=UTF-8&oe=UTF-8&hl=en-gb&client=safari

ACE!!
very pragmatic
will now have a sort out of my spare compression fittings left over from past copper run jobs
i see fitting a T in place of a polyplumb 90* bend involves cutting back the piping which wont work as the existing pipework is pretty tight on that run...guess i will just cut in on the straight run a bit along..watching the K's...will need to get a pipe cutter...and fit a T and then use 2 90* to get the new run to the front of the garage and drop a leg to just above waist height to fit the wras valve...
well pleased with your help
cheers
geof
 
In practice Jon, I agree with your post above, but to be fair, the WRAS website states the following...

View attachment 99608

And while I agree with that sentiment we aren't talking about an existing installation. This is to be a new install to the front of the house.

i want to cut into and extend the cold so i can fit a garden tap at the front of the garage so i dont have to drag the hose round the front from the tap at the back outside of the property

Jon
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Sponsored Links
Back
Top