Post by Carl on Nov 20, 2017 9:47:25 GMT -5
I've updated this article; "Aquarium/Pond Pump Specifications"
This is often a forgotten article since it is not found in our information drop down menu, rather on our "pumps" drop down menu.
Here is an excerpt from the article:
"Most very heavy duty pond pumps such as the SunSun HL Series Direct Shaft Centrifugal Pumps or the Pentair SeaHorse Self Priming Pond/Spa Pumps utilize this impeller design as well, except these are in a direct shaft instead of a magnetic impeller design.
For these ultra heavy duty applications with head pressure much over 20 feet and flow rates much over 4500 gph, the submersible/magnetic water pump design really reaches its limits and a Direct Shaft Centrifugal Pump will provide a much longer life for its owner with generally less problems.
It is noteworthy that most companies do not manufacturer magnetic drive pumps much past before noted 4500 gph (17000 lph) limit for this reason, likely due to higher failure rates where by the magnet disintegrates.
My suggestion is where one's budget cannot afford these direct drive pumps, I would consider simply utilizing two magnetic drive pumps (separate lines would work best). Both should still have good pre-filtration (do not count on built in strainers) and by having two, you also get better redundancy should one fail.
The exception here has been that direct shaft pumps have not in my experience had long lives when used in submersible/sump applications, rather these are best in out of the water large pond/pool/spa applications (plumbed in-line at or below the water feature water line). "
www.americanaquariumproducts.com/PumpSpecifications.html
Carl
This is often a forgotten article since it is not found in our information drop down menu, rather on our "pumps" drop down menu.
Here is an excerpt from the article:
"Most very heavy duty pond pumps such as the SunSun HL Series Direct Shaft Centrifugal Pumps or the Pentair SeaHorse Self Priming Pond/Spa Pumps utilize this impeller design as well, except these are in a direct shaft instead of a magnetic impeller design.
For these ultra heavy duty applications with head pressure much over 20 feet and flow rates much over 4500 gph, the submersible/magnetic water pump design really reaches its limits and a Direct Shaft Centrifugal Pump will provide a much longer life for its owner with generally less problems.
It is noteworthy that most companies do not manufacturer magnetic drive pumps much past before noted 4500 gph (17000 lph) limit for this reason, likely due to higher failure rates where by the magnet disintegrates.
My suggestion is where one's budget cannot afford these direct drive pumps, I would consider simply utilizing two magnetic drive pumps (separate lines would work best). Both should still have good pre-filtration (do not count on built in strainers) and by having two, you also get better redundancy should one fail.
The exception here has been that direct shaft pumps have not in my experience had long lives when used in submersible/sump applications, rather these are best in out of the water large pond/pool/spa applications (plumbed in-line at or below the water feature water line). "
www.americanaquariumproducts.com/PumpSpecifications.html
Carl
