22mm pipe leak - reducer required?

[JamesDarlington]

Have a small leak on a mains fed pipe to the bath (22mm) - but the pipe is old (over 40 years I would say) so would be imperial size.

It is an elbow fitting that is where the drip is from. A solder-end feed type.

Is this usual or rare? The cold pipe is fed from the mains.

Would I be able to repipe using normal 22mm fititng(s) or would I need a reducer. Any tips on how to fix the leak easily and quickly?

 

[TicklyT]

40 years ago is about when everything went metric, so I suppose it could be either. difficult to tell without side - by - side comparison or an accurate vernier gauge / micrometer.

You do need a reducer to adapt from 3/4" to 22mm pipe. the sizes are close, but not close enough.

It is possible to get a reducing olive to fit in a 22mm compression fitting to take 3/4" pipe, or soldered reducers.

Both metric and Imperial Tap connectors still use the same 3/4" BSP threads to attach to taps.

I prefer rigid pipework, but you may be able to cut back the pipe and use a compression fitting flexible tap connector, with a 3/4" olive if necessary. The reduced bore of a flexi is of less significance if the supply is at mains pressure.

 

[Peruse]

The old pipe will probably be 3/4 imperial you will need a 1M fitting 3/4 to 22mm cut the pipe before the leaking elbow and renew to the bath or cut out the leaking elbow at each side and use 2 x 1M 22mm tube and new elbow.

 

[JamesDarlington]

Thanks for helping. In Screwfix when looking through all the fittings, lots of pages, there isn't a 3/4"-22mm reducer in sight!! Do I need to go to a plumbers merchant?

About flexy's - I have heard this can burst, under mains pressure?? Is this true?

 

[Peruse]

Plumbers Merchant will stock both end feed or solder ring.

 

[JamesDarlington]

I have a 3/4" (22mm)flexy tap connector, push fit type (left in box in shed) Will this be of any good, if the old pipe was imperial??

 

[Peruse]

Pushfit on imperial 3/4 NO

 

[JamesDarlington]

ok no probs!!

looks like i'll need a compression flexy and 3/4" olive or a reducer fitting or 2, end feed.

 

[JamesDarlington]

Do screwfix do 22mm - 3/4" reducers?

 

[Peruse]

Just had a quick look and cannot see any. don't know about maybe B & Q

 

[JamesDarlington]

I'll just hope they are 22mm then, they might well be. I have used push fit before, the copper type with metal grab rings. The ones that stay fixed on.

 

[Peruse]

Hope all goes well

 

[JamesDarlington]

Cheers. Hope I make it to the shop in time!!!