Guessing the access branch has one or more solvent sockets. If so and you
want to do it your way you just turn round the vertical pipe. Is that the
question or have I missed something? Personally I would suggest you stick
with ringseal outside and avoid sovent weld otherwise you might run into
expansion problems.

Jim A

Sorry, I didn't make myself clear. The access branch has 3
pushfit/ringseal connections.
Thank you