Need Advice about in wall design
- Thread starter bobafet1
- Start date
bobafet1
Active member
After messing around with my closed loop for some time Ive decided that I need more flow through my 400gal and so I need a bigger pump. Im running the Sequence Dart now and I am considering the Barracuda or Hammerhead. Does anyone have any experience with these pumps. Im looking for one that is not too noisy with better flow.
xdusty6920
New member
i gotta let you in on alittle info i figured out about hammerheads. i was looking into them when i was searching for a pump for my upcoming upgrade. naturally the hammerhead seamed the way to go. but then i really started looking at the numbers and figured out that the efficiency went WAY down hill in sequence pumps......except for the dart......well......multiple darts!
heres the info compairing a pair of darts to a single hammerhead
-the hammerhead uses a huge 1/3 HP motor that draws in 350w.
+darts use a much smaller 1/8 HP motor and only draws 160w. so for two darts it equals a 1/4 HP motor and only draws 320w.
-the hammerhead puts out 5800gph while cranking out 350w.
+the darts actually out perform the hammerhead. at 3600gph each thats 7200 gph while cranking out only 320w.
so the pair of darts gets you 1400 more gph at 30w less power draw.
plus theres more! you have the added benefit of knowing that if one pump fails you still have the second one running your system. also in your case you already have one of the darts to begin with.
sorry if i sound like im trying to sell something. which im obviously not, considering both pumps are made by the same company lol. but i was in the same boat just the other day when i figured this out and felt like i should share that info. hope it helps.
(btw- there is one situation were hammerheads out perform darts. when a huge amount of head is an obstacle hammerheads are the way to go.)
heres the info compairing a pair of darts to a single hammerhead
-the hammerhead uses a huge 1/3 HP motor that draws in 350w.
+darts use a much smaller 1/8 HP motor and only draws 160w. so for two darts it equals a 1/4 HP motor and only draws 320w.
-the hammerhead puts out 5800gph while cranking out 350w.
+the darts actually out perform the hammerhead. at 3600gph each thats 7200 gph while cranking out only 320w.
so the pair of darts gets you 1400 more gph at 30w less power draw.
plus theres more! you have the added benefit of knowing that if one pump fails you still have the second one running your system. also in your case you already have one of the darts to begin with.
sorry if i sound like im trying to sell something. which im obviously not, considering both pumps are made by the same company lol. but i was in the same boat just the other day when i figured this out and felt like i should share that info. hope it helps.
(btw- there is one situation were hammerheads out perform darts. when a huge amount of head is an obstacle hammerheads are the way to go.)
Charles99
New member
I don't think pumps ran in series (one after another), as your implying will do the trick. You will see a medium jump in output (gph) but a bigger jump is max head pressure.
Pumps are designed to operate at a certain RPM. If water is already flowing into the pump near the max flow rate @ 0' head, then the second pump will do little in terms of adding energy.
Think of peddling a bicycle down hill. Once you reach a certain speed, it will be useless for you to peddle because you are already traveling faster than you can peddle.
Pumps ran in parallel will have the same output as one pump, just more turn over through your system.
Pumps are designed to operate at a certain RPM. If water is already flowing into the pump near the max flow rate @ 0' head, then the second pump will do little in terms of adding energy.
Think of peddling a bicycle down hill. Once you reach a certain speed, it will be useless for you to peddle because you are already traveling faster than you can peddle.
Pumps ran in parallel will have the same output as one pump, just more turn over through your system.
xdusty6920
New member
no, im not implying that. what im saying is running two return pumps on two seperate return lines. or if you wanted them for closed loops, running two closed loops. with two return pumps on seperate lines they dont make one another useless. same idea as a single return but done twice.
im really unsure as to what you mean in your explanation. 2 pumps doubles preasure to the tank, doubles flow, and doubles turn over. i think either im misunderstanding your meaning or your misunderstanding mine.
im really unsure as to what you mean in your explanation. 2 pumps doubles preasure to the tank, doubles flow, and doubles turn over. i think either im misunderstanding your meaning or your misunderstanding mine.
