Is wattage comparable between electrical devices?

[her209]

Originally posted by: Rubycon
30RLT would work for pressure. The motor unloads as head pressure increases so you can install a 3/4" ball valve on the discharge line and throttle your flow as needed.

Oh, good to know.

 

[Banzai042]

Originally posted by: FoBoT
power factor was my favorite part of electrical theory class

I always wondered what the electrical company would do if you somehow threw a large capacitor into your home circuit and dropped the power factor to something like .2

 

[BoomerD]

Originally posted by: her209

Originally posted by: BoomerD
Little Giant pumps are sweet. They can be a bit noisy IMO, but they work well and (usually) last almost forever.

Are they pretty loud? Should I go with a different manufacturer?

What kind of environment will it be used in?

Where will it be located?

If it's for an aquarium, where will the aquarium be located?

The noise usually isn't any worse than a computer case fan...and often is less than that. It's not like they're GRRRRRRRRRRRRRRRR to the point where you can't listen to TV.

Some are quite loud, (MAK pumps) and IIRC, the quietest ones (Poseidon Titanium) also transfer the most heat to the water. (5-6 degrees)

Originally posted by: Rubycon


Iwaki/Walchem magnet drive pumps are better than Little Giant.

Indeed they are, in fact, (if memory serves) the Japanese motor Iwaki's are even quieter.

WHICH pump the OP needs depends on a wide variety of variables...

Needed/desired GPH, head, pressure or flow, etc.

Here's a great pump head loss calculation application:

http://reefcentral.com/calc/hlc2.php

 

[her209]

Originally posted by: BoomerD

Originally posted by: her209

Originally posted by: BoomerD
Little Giant pumps are sweet. They can be a bit noisy IMO, but they work well and (usually) last almost forever.

Are they pretty loud? Should I go with a different manufacturer?

What kind of environment will it be used in?

Where will it be located?

If it's for an aquarium, where will the aquarium be located?

The noise usually isn't any worse than a computer case fan...and often is less than that. It's not like they're GRRRRRRRRRRRRRRRR to the point where you can't listen to TV.

Some are quite loud, (MAK pumps) and IIRC, the quietest ones (Poseidon Titanium) also transfer the most heat to the water. (5-6 degrees)

Aquarium. Most likely in the living room.

 

[Rubycon]

Originally posted by: BoomerD

Originally posted by: her209

Originally posted by: BoomerD
Little Giant pumps are sweet. They can be a bit noisy IMO, but they work well and (usually) last almost forever.

Are they pretty loud? Should I go with a different manufacturer?

What kind of environment will it be used in?

Where will it be located?

If it's for an aquarium, where will the aquarium be located?

The noise usually isn't any worse than a computer case fan...and often is less than that. It's not like they're GRRRRRRRRRRRRRRRR to the point where you can't listen to TV.

Some are quite loud, (MAK pumps) and IIRC, the quietest ones (Poseidon Titanium) also transfer the most heat to the water. (5-6 degrees)

Close couple pumps (circulators) are definitely going to heat the water up to the point where you need a chiller. All pumps heat the water. Put a pair of 1000 l/hr power heads in a 20gal tank and you'll see a nice 10deg above ambient rise.

A medium sized (2000gal/hr) ammonia tower/downdraft skimmer can cool the water down almost as much as the 1/2hp pump it requires - heats it!