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Your cart is empty.Dinglab,Stainless Steel Aspirator Pump,Humboldt,Lab Vacuum Hydro Aspirators Filter Pumps This aspirator pump made From Stainless Steel. This aspirator pump will perform under both high and low water pressure conditions. The pump features a ball-type positive action valve in the suction tube which will prevent water backflow if the pressure is reduced. Total length 98mm Watewr inlet OD 16mm Watewr outlet OD 10mm Vacuum OD 10mm Pumping rate: 1.5L/Min Max Vacuum：420mmhg Rubber O-ring with super glue for seal.Dont open this pump
Frank Garcia
Reviewed in the United States on August 28, 2019
I am using this in a recirculating venturi setup to pump down a vacuum chamber. Theoretical minimum pressure should be the vapor pressure of water, but I'm only getting down to ~0.8atm (So, only ~0.2 atm pressure reduction). I am relatively certain that this is due to the pump and not a leak, as bubbles can be seen escaping into the re-circulation tank until the pressure stops dropping. Best guess here is that I'm using a water pump with either incorrect flow rate or incorrect pressure, but ZERO documentation provided, so I have no clue what might be causing the poor performance. Technically, the pump works, and can probably do some basic chemistry work, but does not do what I think it should be able to, I don't know why, and there is no way to find out.
Customer
Reviewed in the United States on July 27, 2019
... If you do it right. It took a bit of effort to get the vacuum to work well, but eventually it did. It all comes down to sealing ANY possible leaks – tighten all your hosing with hose-clamps, and tighten the ever-living-hell out of this contraption. Finally, it seems to work a little bit better if you hold it sideways. I don't know why.But the vacuum it produces is pretty good. Works excellent with the Büchner funnel, but I haven't tried it yet with distillation. It's definitely on my todo list. Will update this when I work out what the vacuum produced is by measuring the boiling temp of water.
Doug H.
Reviewed in the United States on November 1, 2019
Pros: It's an effective aspirator pump.Cons: It took a long time to arrive directly from China, and there were some metal burs on the water inlet that had to be filed off.I'd gladly pay $2-3 more for this direct from a US supplier.
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