trying to slow down flow of mag drive

maxdout · 05/18/2006, 01:07 AM

is there any way i can slow the flow down on my mag 9.5? it flows to much, i haven't installed it yet but i did a test run and it pushes way too much water out. also,

http://www.bigalsonline.com/catalog/...tegory_id=2887

are these beneficial to my system? or should i just put a filter sock on the intak tube?

Blown 346 · 05/18/2006, 02:00 AM

You could get a ball valve(lowes or Home depot in the plumbing dept.) that will give you the option of how much you want from 100 % to none.

bllfish · 05/18/2006, 03:46 AM

You could run it through a SQWD, or if you have a chiller go to the chiller and then to the return.

Saltcity · 05/18/2006, 07:15 AM

Did you do a test run with ALL the plumbing exactly how it will be?

Mags will lose flow with every piece you add to the plumbing.

The best way to "Throttle" back a Mag pump is to Not put a ball valve directly coming out of the pump but to add a "T" in the return line and add the ball valve to the T'd off section with the plumbing running back to the sump. This way it doesn't put a strain on the pump and prematurely end its life.

Amador · 05/18/2006, 07:23 AM

My setup is as Reeforbust described, and I would recommend you don't use a ball valve. They are incredibly hard to adjust and impossible to adjust accurately. Maybe a gate valve would work better.

salreus · 05/18/2006, 07:25 AM

I agree with the above. Mag drives are not designed to be throttled down. As above, instead T it off and use one for your device and then redirect the other flow somewhere else. Also, causing backpressure is what causes mags to leak.

nataz · 05/18/2006, 08:14 AM

I put a t on my mag. with a ball valve on the part of the t thats not hooked up to my return. This way if i have to much pres. I open the ball valve which lets water right back into my sump and if i need extra pres. I just close to valve till i get the amount i need. Works for me .... Good luck. Also it doesn't restrict the flow out of pump.

Ploppers · 05/18/2006, 08:29 AM

Quote:

Originally posted by bllfish
You could run it through a SQWD, or if you have a chiller go to the chiller and then to the return.

Mine is running through a SQWD and it reduces flow quite a bit.
If you don't go that way you should put a T with a valve on it like Reeforbust said.

maxdout · 05/18/2006, 08:55 AM

how far up do you put the T? i do have a T on it but its about 4 inches from the exit of the Mag. The pipes are the 3/4 pvc and i have 2 going into the tank. They make ALOT of bubble and i was thinking it shouldn't be that much. + it moves the sand around alot. I will try out putting anohter T and reaaranging.

AZDesertRat · 05/18/2006, 08:55 AM

It won't hurt a Mag pump at all to restrict the discharge with a ball or gate valve. A Mag is a centrifugal pump and with that design you can restrict all you want. Just make sure you restrict the discharge side and not the suction side, there you would have problems. Like mentioned above, you need to add up all the plumbing including 90 degree elbows, barbed nipples, pipe, vertical lift, etc and use the calculator on this site before saying flow is too much.

05/18/2006, 01:07 AM	#1
maxdout Registered Member Join Date: May 2006 Location: elk grove Posts: 1,098	trying to slow down flow of mag drive is there any way i can slow the flow down on my mag 9.5? it flows to much, i haven't installed it yet but i did a test run and it pushes way too much water out. also, http://www.bigalsonline.com/catalog/...tegory_id=2887 are these beneficial to my system? or should i just put a filter sock on the intak tube?

05/18/2006, 03:46 AM	#3
bllfish Registered Member Join Date: Jun 2002 Location: Stuart, Florida Posts: 1,818	You could run it through a SQWD, or if you have a chiller go to the chiller and then to the return. __________________ "I fish by myself because lots of people don't like me, and the ones that do like me, well, I don't want them to know my spots." ><)))))*>--- Current Tank Info: 72 bow, 36" stand, 4 54W T5, vantec stealth fans, eheim 1260, mj 1200 & 2 Koralia #1 to WaveMaster Pro, CPR 24" Aquafuge HOB & 7100K PC, JBJ Arctica chiller, LiterMeter III

05/18/2006, 07:23 AM	#5
Amador Registered Member Join Date: Oct 2005 Location: Jenks, OK Posts: 320	My setup is as Reeforbust described, and I would recommend you don't use a ball valve. They are incredibly hard to adjust and impossible to adjust accurately. Maybe a gate valve would work better. __________________ Chris Current Tank Info: 125g AGA, 55g sump, 2x 250W MH, Mag 12, MSX 160, BB since 5/14/07

05/18/2006, 08:55 AM	#9
maxdout Registered Member Join Date: May 2006 Location: elk grove Posts: 1,098	how far up do you put the T? i do have a T on it but its about 4 inches from the exit of the Mag. The pipes are the 3/4 pvc and i have 2 going into the tank. They make ALOT of bubble and i was thinking it shouldn't be that much. + it moves the sand around alot. I will try out putting anohter T and reaaranging. __________________ ********* AGE 40x28x22 tank, custom sump, ATB flowstar, 2*A350 Current Tank Info: 90 everything

05/18/2006, 02:00 AM	#2
Blown 346 Registered Member Join Date: Apr 2004 Location: Rockford, Illinois Posts: 6,596	You could get a ball valve(lowes or Home depot in the plumbing dept.) that will give you the option of how much you want from 100 % to none.

05/18/2006, 07:15 AM	#4
Saltcity Moved On Join Date: Aug 2005 Location: Missouri Posts: 4,297	Did you do a test run with ALL the plumbing exactly how it will be? Mags will lose flow with every piece you add to the plumbing. The best way to "Throttle" back a Mag pump is to Not put a ball valve directly coming out of the pump but to add a "T" in the return line and add the ball valve to the T'd off section with the plumbing running back to the sump. This way it doesn't put a strain on the pump and prematurely end its life.

05/18/2006, 07:25 AM	#6
salreus Awaiting Email Confirmation Join Date: Jun 2005 Location: Columbus Posts: 311	I agree with the above. Mag drives are not designed to be throttled down. As above, instead T it off and use one for your device and then redirect the other flow somewhere else. Also, causing backpressure is what causes mags to leak.

05/18/2006, 08:14 AM	#7
nataz Registered Member Join Date: Sep 2005 Location: pittsburgh Posts: 216	I put a t on my mag. with a ball valve on the part of the t thats not hooked up to my return. This way if i have to much pres. I open the ball valve which lets water right back into my sump and if i need extra pres. I just close to valve till i get the amount i need. Works for me .... Good luck. Also it doesn't restrict the flow out of pump.

05/18/2006, 08:55 AM	#10
AZDesertRat Moved On Join Date: Jan 2002 Location: NW Phoenix Posts: 16,621	It won't hurt a Mag pump at all to restrict the discharge with a ball or gate valve. A Mag is a centrifugal pump and with that design you can restrict all you want. Just make sure you restrict the discharge side and not the suction side, there you would have problems. Like mentioned above, you need to add up all the plumbing including 90 degree elbows, barbed nipples, pipe, vertical lift, etc and use the calculator on this site before saying flow is too much.