Installed a salamander shower pump today.
Nice little beast allows a direct feed shower on a unvented system to have that little bit more power. up to 1.5 Bar extra pressure to be precise.
Normally in an unvented system in a standard house you get about 0.2 to 0.4 Bar so the increase is very noticeable.
Job took 2 hours
That includes installing a spur and pipework and making good afterwards.