32mm to 22mm valve - does such a thing exist?!

Maccy

Maccy

Maccy

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Bit of background, trying to replace the tap in our kitchen and the feed pipes have the standard 22mm nuts to connect to the hot and cold feed pipes.
However for some reason (always the case in our house!) the feed pipes are connected with 32mm (I think) plastic screws and valves.

Is it possible to get a valve/adapter that will allow me to connect the new tap hoses to the existing 32mm setup?
 
Are you sure it's 22mm? Kitchen taps normally have 15mm pipe to them.
Bath taps are the only ones that you'd run 22mm to.

22mm and above is incoming mains water.
 
m4rmite said:
https://www.bes.co.uk/32-mm-x-22-mm...hNrsRQ9HGPFh6ndo7sAeJQKOsjDGrl9xoC3hEQAvD_BwE
This site has the same fitting and says its good for domestic hot and cold water supplies
Click to expand...
Thanks, came across that in my searches too!

Danm54 said:
Are you sure it's 22mm? Kitchen taps normally have 15mm pipe to them.
Bath taps are the only ones that you'd run 22mm to.

22mm and above is incoming mains water.
Click to expand...
The copper pipe in the feed is 15mm yes, but the nut on the new hose for the tap is 22mm. I'm wondering now if it's worth just taking out all of the plastic fittings, and putting on a new 22mm valve in!

This is the existing setup btw:

lYJj8Xs.png
 
Can you send a pic of the 32mm pipe? Is it blue MDPE? This is normally the incoming main, which would have a stopcock on it and then reduced to 22mm or 28mm. You'd then have this main trunk teed off and reduced to 22mm around the house, and finally go straight into a tap (usually a bath tap) or reduced further to 15mm (other taps and outlets).
 
Your pic just looks like 15mm straight push fit couplers?

Dont you want a 22 to 15mm straight coupler?

Do you have a pic of the connections on the taps?

Hard to understand without a pic of the tap. I don't think I've seen a kitchen tap with a 22mm inlet.
 
Maccy said:
Thanks, came across that in my searches too!


The copper pipe in the feed is 15mm yes, but the nut on the new hose for the tap is 22mm. I'm wondering now if it's worth just taking out all of the plastic fittings, and putting on a new 22mm valve in!

This is the existing setup btw:

lYJj8Xs.png
Click to expand...

Post a pic of the new connections, they're probably 1/2" nuts which will require a 15-1/2" male copper to iron.

If they're 3/4" then they're bath taps not sink taps.
 
Maccy said:
Here we go guys, pic of new tap

LdX6sBx.jpg


And pic of one of the hose ends:

TaPUjMw.jpg


Measured across, it's 22mm.

@Hedge yes the existing copper pipes are 15mm.

Had a look on Screwfix, looks like you can get 15 > 22mm extensions so I might need 2 of these it seems.

EDIT - looks like this may be ideal - https://www.screwfix.com/p/jg-speedfit-plastic-push-fit-reducing-couplers-22-x-15mm-5-pack/48133
Click to expand...

Those are 1/2" female connections (they measure 22mm but they're not) you need 2 x 15mm - 1/2" male irons.

These
https://www.screwfix.com/p/compression-adapting-male-coupler-15mm-x/69358

Or these
https://www.screwfix.com/p/hep2o-plastic-push-fit-adapting-male-coupler-15mm-x/5970f

Or anything else that goes from 15mm pipe to 1/2" male iron.
 
Don't think so, the 15mm part is the copper pipe size, the 1/2" bsp is the threaded side.

Copper pipe sizes are right but bsp sizes don't match the size they're called. No idea why.

Edit, read that wrong last night, if you're connecting to 15mm pipe you'll need a 15mm fitting. The OD of the pipe will be 15mm so that side is easy to measure.

The imperial bsp fittings don't match up though, so a 1/2" fitting doesn't measure 1/2" OD. I did see a chart once that gave the correct measurements for the different sizes so that would be helpful to find the correct size fitting.

Once you know what fitting is needed both sides then you can find one to fit both, yours being 15mm - 1/2" male.
Occasionally you'll need a couple of fittings to do this but you can get most combinations in 1 fitting.

If you've been doing it long enough then you just know what fitting you need by looking at them.
 
Last edited:
Well it’s finally done! An absolutely horror of a job and had to take the sink out to get the old tap off but we’re all in!
Here’s a pic of the new tap hoses connected up, cheers for the help guys :)

hEPZOcX_d.jpg
 
Nicely done. Never had to remove a sink to get some taps off but there's a first for everything!

Plastic has it's place there's no doubt about that, I like to restrict my use of it to under floors and places out of sight. Under sinks, airing cupboards etc it has to be copper really.
 
A nice neat job. I've done quite a bit of plumbing before so when I did mine (looked very similar to yours), I did actually remove the plastic push fit couplers and replaced with full bore compression isolation valves (+ I tee'd off the cold for my outside tap I installed).
 
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