Erbauer ERB422PMP 1100W Multi-Impeller Surface Water Pump 240V
Really Good Pump!
This pump seems designed for a good head at the expense of flow rate. If that's what you need, as I did, it's ideal. I was lifting water just under 10 metres, and it went at a good speed, probably limited by the bore of the hoses as much as by the pump itself. The pump needs priming, so can be a bit of a pain if the suction pipe breaks the surface, but once it's going, it sems reliable. Only pumped about 50 tons of water so far, so a bit early to judge ultimate reliability, but I've no concerns.
(Shame that it appears to be discontinued!)
26 Feb 2015
Great value for money
for the cost of this pump the build quality is great
8 Jan 2015
A good heavy pump. It needs a straight suction hose as described in the instructions.
26 Nov 2014
Not a general purpose pump
This pump is basically 5 centrifugal pumps in cascade, designed to lift water to a much higher point than any single-disc pump could manage. So, unless you want to do something like make a 100ft high fountain or lift water from a well to the tank in the attic of a four storey building (what I use mine for) - you might want to look at something else. Each impeller is necessarily small - so the overall flow rate is relatively low. Clearances are small - hence the water supply probably needs to be filtered/strained. I used a normal, self-priming, pump on a valved T inlet pipe to prime the system - removing that pump once the main pump is running. There must be a non-return valve in the inlet supply. I also have a pressure switch on the output pipe that must be closed (ie there must be a head of water on the output) for the pump to get power. That ensures that the pump will never run dry. Personally, I prefer the cast-iron pumps that these are replacing. Maybe not as efficient* but they would run for (almost) ever and take a lot of abuse. These won't. Run them dry, have a bit of sand in the water, let them freeze, or whatever and you need a new pump...
*But they still use a LOT of electrical power.
21 Feb 2013