3/4" to 25mm Stop Tap

[crispy_wafer]

One for the plumbers, I've got a 3/4" supply coming onto the land, twas an old supply, but we are wanting to connect the new build to it.  I've already ran 25mm pipe into the build.  Now because the old pipe might have the odd scratch and difficult to clean up, so I'm thinking a good old brass compression fitting would be best for this job.  I'm struggling to locate a 3/4" to 25mm brass stop tap - does such a thing exist?  Or even a 3/4 to 25mm brass coupling?  Then I could use a standard 25mm top tap later on in the chain.

[Russell griffiths]

It does exist because I did just the same job. 
black 3/4 to a brass tap to 25mm mdpe 

we have a very good agricultural hose supply near me, I went in and got it all off the shelf. 
the brass stop tap will hurt your wallet. 

[Nickfromwales]

You buy a 22mm one and then replace the metric olive with a 3/4” olive   
 

@Russell griffiths would have known that if he wasn’t busy touching fish inappropriately. 
 

Or, just one of these ;

https://www.screwfix.com/p/flomasta-compression-equal-couplers-22mm-2-pack/66818?_requestid=344691
 

with one of the olives changed out for one of these;

https://www.bes.co.uk/3-4in-compression-olive-copper-21062/

Edited May 15, 2022 by Nickfromwales

[Miek]

If its old 3/4 pipe the bore might be small. You can get an adapter kit to suit the old pipe bore, this puts the seal inside the old pipe and allows a standard 25mm straight coupling to join the two. You do need to get the right kit though as the old pipes had different  bores. Searcy for 'plasson adapter'

[crispy_wafer]

Super many thanks,  Buildhub to the rescue once again 👍

 

So a 22 to 25 tap with a 3/4 olive, just need to locate an insert for the old 3/4 pipe. Or a Plasson adapter, but I think I'd like to do this with as little connections as possible I think.

 

is the direction of the tap important in this underground application do you think? 

 

 

[crispy_wafer]

Following this up.

 

Used a selection of Plassons finest, to transition from old 3/4" to 25mm, supply to the build and a supply to the stables.  I probably laid the ducts too close together not leaving much room to get the 2nd stop tap.  The idea was to have the two stops close together for logistical purposes...  Now because I have connections here, I think some form of chamber where this can all be accessed would be best, rather than a couple of the skinny stop tap chambers.  Any advice?