Shower pump
So upgrading from a 15mm pipework salamander pump, to a 22mm pipework Stuart Turner. Is it ok just to use flexi pipe to upsize the existing 15mm pipes to 22mm in order to attach and feed the new pump?
Advice from 1 local tradesperson
It's not advisable to use push fit fittings on any pipe to a shower or bath as the insert reduces the pipes diameter, better to use a proper reducing fitting.
If you mean a flexible hose, that could be done but I would prefer to use soldered fittings, cheaper too!
