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Diaphragm Pump

Diaphragm Pump

$ 49.99


This little diaphragm pump is an excellent choice for automatic top-off duty. Unlike other diaphragm pumps available, this little powerhouse can push water to 60psi (~130ft high). It can also safely run dry, unlike conventional powerheads. It is quiet and runs on 12v DC power. Flow rate is approximately 400mL/min, but note that it is not rated for continuous duty nor salt water applications. This means for intermittent use (as in ATO usage) it is great, but we do not recommend it for use as a calcium reactor feed pump, for example.  It can be used in conjunction with a kalk stirrer, but only to push fresh water into the stirrer.  We do not recommend pulling kalkwasser through the pump, as the high pH may shorten the life of the rubber diaphragms.

Diaphragm pump kit includes:

  • Pump in wall-mountable box
  • 12v DC Power Supply
  • Tubing, 10ft
  • Check valve to prevent back siphoning
  • Micro ball valve to adjust flow rate (max 400mL/min)
  • Siphon break tee (see instruction manual for details when this is needed)

Technical Specs:
Max flow rate:  400mL/min @ 0ft head pressure
Min flow rate: Fast drip
Max head pressure: 60psi or 130ft
Run dry: Yes
Self priming: Yes
Power: 12v DC, 4w max, 2w min
Warranty: 1 year

Click here for instruction manual

Customer Reviews

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  • Reviews (33)
  • Questions (2)

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Stephen G.
United States

Best pump I have had

Great. I have three of them now

Tim Goudy
Bentonville, AR

Great Pump

Quiet and moves water easily. I expected more of a trickle based on the size of the pump but it pushes a full 1/4" stream through the ATO hose. Paired with the ATO, tops the sump off in about 2-3 minutes. If you're right by the tank, you can hear it kick on but if you're more than 4 or 5 feet away, you can't even hear it. Very good pump....

Mark K.
United States

Diaphragm pump

Works very well. It pushes ATO water from my garage to my 360display in the house. It’s a very long distance and must go up 2 stories.

Douglas M.
United States

Great pump

This pump is great for an ato setup. has more power than something like an aqualifter.

Henry Z.
United States

Diaphragm pump ***amazing customer service***

Purchased avast’s diaphragm pump for my Ato the previous pump died on. Received order quickly and correctly, unfortunately unit didn’t work. Reached out to to Avast who immediately sent me a return label no questions asked. Then much to my delight received pump back in order a week in perfect working order. Unit functions flawlessly and blown away by the awesome customer service. Avast has a customer for life with me