i need pump experts

[Cossack1977]

ok. Im after some experts to help with a problem.
i have been working on a custom filter setup for a while and its all sorted bar for the pump.

heres a pic of my setup at the moment:

left side

now have a bypass with a t and a tap fitted between blue canister and pump to allow flow bypass so not as to cause backpressure to the pump and also allow greater flow control for the fluid bed filters.(no pic yet)

right side

working great as good as i thought problem is the pump. So loud so much heat. WIFE WILL KILL ME.

i first started with with 2 resun 3500l/ph 4.5 max head height pumps one pushing at start of loop one pulling at end of loop worked good for about a day when filters started getting a bit clogged then only a trickle of water came out. (couldnt cope with backpressure)

so i changed them over for something with a bit more guts. a 1hp 3600 l/ph 60max head pump. Now with this thing the setup is awesome working fine. tank crystal clear problem is the pump is very noisy even after a made an accoustic box for it and dropped the sound from 74db to 55db.

from what i found out head height is like torque in a car for torque more constant the energy.

so i need a new pump:
1) quite is very important
2) has to run inline out of water
3) atleast 3500 l/ph
4) head height as much as possible must be more then 4.5meters

any ideas?

i aready tried runnning 2 pumps on serries to increase flow and that did very little.
1) can you run pumps in parallel?
2) will that increase the water presure? (as in head height).

Help me please.

 

[itZme]

You can run the pumps in parallel by plumbing both pumps into a tee. This will not increase the pressure but will double the potential flow rate. If the pumps can't push the water through the system by themselves then it will not help to run in parallel.

Series is like this ... Pump-->Pump--->system.

Parallel is like this ...Pump---|_______>system
. . . . . . . . . . . . . . . . Pump---|

Hope that simplifies it a bit.

Good luck with your system. It seems like you planned a lot but to me it looks overcomplicated. I don't have any suggestions for pumps but I would be tempted to go look at an industrial supply store and see if you can actually listen to them pumping or if they offer a return if there isn't enough pressure. It might help you to put a guage inline at the beginning of the system after the pump to see what type of pressure builds in the system just to get water to flow out the other end. Then use that as your basis to find a new pump. I am guessing it will not be quiet though. You could look into building a "hush box" where you can isolate the pump noise from your house but then you have the heat problem. Also when you have resistance in the line (like each component in your system) you will add heat into the water.

Well, whatever you end up doing, good luck with it.

-- itZme

 

[crazyelece]

For quiet I would recommend a small swimming pool pump. You can find then for small pools or large water garden aplications. It would also give you plenty of head height and back pressure on the pump is not a problem. I just got one for my pond and it cost me around 200 dollars. Most of them will have 1 1/2 fittings on the intake and return.

If all you need is cooling you could add computer type fans to your noise suppresion box to run fresh air in and out to keep it cool.

 

[Cossack1977]

ok i think i have found my pump. Looks like i have to try and buy it from the US though.

Pump:
Mag drive 36
max head 24foot
flow 3600 gallon.

but i need to find out if it is duel voltage. 110/240v?

any feedback on this pump. it seems to be the strongest madnetic pump out there