Your cart
Diaphragm Pump

Diaphragm Pump

83 reviews
$ 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 30psi. Please be aware this is not a silent pump, it does vibrate and makes a similar amount of noise as a typical aquarium air pump.  It can also safely run dry, unlike conventional powerheads. It runs on 24v 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
  • 24v 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 Run time: 20 minutes continuous 
Max flow rate:  400mL/min @ 0ft head pressure
Min flow rate: Fast drip
Max head pressure: 30psi 
Run dry: Yes
Self priming: Yes
Power: 24v DC, 4w 
Warranty: 1 year

Click here for instruction manual

Customer Reviews
4.9 Based on 83 Reviews
5 ★
90% 
75
4 ★
8% 
7
3 ★
1% 
1
2 ★
0% 
0
1 ★
0% 
0
Customer Photos
Write a Review Ask a Question

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
  • pump
  • water
  • basement
  • Avast
  • issue
  • floor
  • build
  • problem
  • diaphragm pump
  • reservoir
JS
08/29/2022
Jason S.
United States

Great pump

Use it to for ATO to pump from basement to display tank. Works great

JB
08/24/2022
Javier B.
United States United States

Love this pump

Pairs perfect with my autotopoff.com system. Will definitely buy from again.

GB
07/20/2022
glenn b.
United States United States

Quick delivery and works great

It has worked to perfection. It was delivered quicker than promised.

MS
05/31/2022
Mark S.
United States United States

Best top off pump made!

These are long lasting tough little pumps that I use as my ATO pump for my FOWLR tank. Nothing else comes close.

MB
04/21/2022
Matthew b.
United States United States

Great little pump

Great pump for ato fill, previous model worked great for 3 years and i wanted to have a spare because only things you can't replace break

Avast Marine Works Diaphragm Pump Review