Planning ahead of bathroom instal

Afternoon all,

Currently have a shower pump (salamander) that is located a fair distance from the hot water cylinder. The pump is at the front of the house in the kid's playroom (downstairs) at ceiling height and the hot water cylinder is at the back of the house in an upstairs bedroom. The hot and cold has been fed to the pump in 15mm, whereas for that length of run I'd presume it should be 22mm.

Anyway, when we come to do the bathroom in the next few months I'm looking to relocate the pump to next to the hot water cylinder. Then run 22mm pipe as near as possible to the new shower etc.

My main question is whether this flange (photos below) is a surrey flange or not? I presume it is as the feed that comes out the side is the one that eventually feeds the current pump. That pipe runs to the hot on the bath taps and a tee takes it to the pump.

Any ideas? There doesn't appear to be any markings on it.

Also, can I tee into the pipe before the bend to feed the pump. The rest of the pipe feeds the bathroom taps. The other alternative it to just cut the pipe to feed the pump and run all the bathroom taps from it. For reference, the pipe that tees off at the back wall from the vent pipe is to feed downstairs.

Thanks in advance.

Anyone?

If the pipe coming out of the top of the flange, that then tee's left into a 15mm left & right into a 22mm that then goes up into the attic and curves over the top and into the cold water cistern then yes it probably is a surrey & the 22mm feed out the side would be the shower feed.

That feed should be dedicated solely for the pump, nothing else should really be fed from it. The hot taps, et all, should be fed from the pipe exiting the top of the flange.

Thanks for the reply.

Yes, that was my thoughts. I think whoever did the bathroom and pump years ago decided it was easier to run the one pipe.

My decision now is whether to use that connection solely as the pump feed for the shower and run a new pipe for the taps, or run the taps and shower off the pump.

It's in my son's bedroom in the cupboard... doubt it'll wake him up though, he falls out of bed and continues snoozing!