Wet on the inside

I have a combined shower sump/pump/float switch box that I bought, but it turned out to be no good.  The water entry pipe to the box was too high up, and ended up at the same height as the wetroom drain.

Time for Plan B (or was it C or D ?), I connected the shower drain to a small "sump", made from a shower drain fitment.  This sump has a float switch in it, and an outlet connected to a Gulper.  The float switch operates a 15 second delay relay, meant for keeping car lights on after the key is removed.  This means that the pump should keep running for 15 seconds after the water is gone, and should remove any problems caused by the float switch bouncing up and down on the "waves".
When operating, the gulper seemed to struggle when the sump was not full. It seems that when the water level is below the top of the outlet, the gulper sucks air instead of water, as the air is easier to pump than water.

A modification to the outlet pipe, using a strange waste fitting that has been in my plumbing box for years, makes sure that the gulper sucks as much of the water out as possible.  The only downside is that this pipe now takes up the room I was going to use for a float switch.

I will try to find a smaller float switch, but for now the gulper has a simple on/off switch.  I just have to remember to turn it one before having a shower!
The laminate and shower fittings are now complete and the wetroom is looking good.

 

I managed to find some "swimming pool changing room" tiles which, although expensive at £35 per meter, look good and are anti-slip.  Having borrowed an electric tile cutter, I spent most of the weekend getting extremely dusty, but overall I am quite pleased with my first tiling attempt.