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Macerator Waste Pipes for Fitting Shower and Toilet

Posted: Thu Nov 08, 2018 5:47 pm
by LoisLayne
Greetings all, I'm hoping somebody can help me before I call up the uniflo engineers and look dumb!

I am fitting a shower and toilet to a uniflo 4 macerator. It comes with a 22mm non return elbow and 22mm rubberised pipe that I suspect will connect to 22mm plastic pipe.

My question is, can I step the pipe up to a larger one from the 22mm or will this cause an air lock problem? My intention was to use some kind of 22mm to 35mm non return convertor?

Thanks in advance!

Layne