In uk.d-i-y John wrote:
In article ,
"Christian McArdle" wrote:

So is it feasible to put a pump in a rain water butt to feed water to the
power washer?

Mine worked just fine from a bucket. Used water surprisingly slowly, too.

Eh? So are you saying that they suck water - they don't require any
pressure [at the input end]?

YPWMV.
Mine says explicitly "will not suck water from a water butt".
Now, if it means that it requires a positive head by this, ...

I have however run it from ~50m of hosepipe, connected to a hot water
tank maybe 1.5m above where I was working.

It claims 360l/hour, which'd work out to 6l/min, or 100ml/s.
On actually measuring the output into a bucket, I get more like 60% of
this.