frankvw
Well-Known Member
- Joined
- Aug 8, 2009
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Following my earlier questions on rainwater harvesting, I'm currently looking at a pump to transfer raw rainwater through a filter and a UV sterilizer into a second tank. Looking for a suitable pump to do that I came across a nicely priced 375W Pascali peripheral pump. At less than half the price of your average centrifugal pump of the same power rating there should be a catch, right? Well, yes. Peripheral pumps are ideal for low flow / high pressure applications (which is what I want) rather than for high flow, but the main limitation is that they can deal far less well with particles in the fluid than regular centrifugal pumps. In fact, on the product data under "Application" is specifically says "Clean water without abrasive particles". Which is consistent with what I believe I know about peripheral pumps.
Now I'm planning to run my raw rain water through a 30 micron mesh filter even before it goes into the pump, so the particle size should be below 30 micron. But they will still be abrasive particles (fine sand and dust) albeit very small and in limited quantity.
So my question is: how clean should the water be for a peripheral pump to handle? Will 30 micron or less sized particles damage it in short order? Of course, the cleaner the water the better and the longer the pump will last, but at the much lower price of the peripheral pump I'm looking at this as a trade-off.
I've asked the supplier via the contact form on their website. but I have had no response. (Not surprising: in my experience half the contact forms on websites either have broken back-end code or the mail goes to a dead address). Also, there's no phone number. I'm planning to get the pump through a reseller who has stock so that's no real problem, but the reseller can't tell me what the maximum particle size can be before it starts to impose excessive wear and tear on the pump.
Any pump-o-logists here who an shine some light on that particular matter?
Now I'm planning to run my raw rain water through a 30 micron mesh filter even before it goes into the pump, so the particle size should be below 30 micron. But they will still be abrasive particles (fine sand and dust) albeit very small and in limited quantity.
So my question is: how clean should the water be for a peripheral pump to handle? Will 30 micron or less sized particles damage it in short order? Of course, the cleaner the water the better and the longer the pump will last, but at the much lower price of the peripheral pump I'm looking at this as a trade-off.
I've asked the supplier via the contact form on their website. but I have had no response. (Not surprising: in my experience half the contact forms on websites either have broken back-end code or the mail goes to a dead address). Also, there's no phone number. I'm planning to get the pump through a reseller who has stock so that's no real problem, but the reseller can't tell me what the maximum particle size can be before it starts to impose excessive wear and tear on the pump.
Any pump-o-logists here who an shine some light on that particular matter?