We want to move our washing machine to a location in the house where draina ge will be difficult. We *could* run 50mm pipe round about 8m of walls with some AAVs, but it seems more sensible to use a pump, most likely a Grundfo s Sololift2 C-3 unless anyone has anything to say about it. To get the right sizing of outlet pipe, we need to estimate the inflow (too small, and the flow will be noisy, too large and the flow will be too slow to self-clean). Anyone have any idea even vaguely how fast a modern washing machine pump ch ucks water out?

IME washing machine pumps don't really pump very well, they just harass the water into moving on a bit. In a similar situation, I bought a spare pump, wired it in parallel with the existing pump and put it half way along the outlet. That worked fine. Cheers

Washine machine discharge pump - how fast?

Jun 08, 2016 21 Replies

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bblaukopf 9 years ago

That sounds good (as you can tell from dates, this project is moving slowly!).

What kind of connector do use to couple the w/m hose to the 15mm?

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Roger Hayter 9 years ago

newshound wrote: snip

Mine has coped fine for 15 years with the occasional high (nominal

90degrees) temperature cotton wash. As you imply, by the time the wash cyle has finished and the water has gone through the hose into the residual water in the saniflo I doubt if its temp. rating is exceeded.

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