Plumbing an external Pan World Pump?

Avast Marine · 03/10/2006, 01:32 PM

I was planning on starting my plumbing this weekend and just got my new pump. I was going to use 1 1/4" plumbing from the overflow and split a Y, run 90% to the skimmer section of the sump and 10% through the fuge. Both off sets of the Y will have 1 1/4" pvc and ball valves. On the return the pump has 3/4" threaded inlet and outlets. So on to my questions....

Should I use 1 1/4" for the return pump on both ends and reduce right at the pump with a bushing or run 3/4" for the entire return?

Do I really need 1 1/4" after the Y from the overflow running to the fuge if I only plan on 50 - 75 gph or should I reduce to 3/4"?

Last one, does the pump have to be oriented so the inlet flows through a bulkhead at the bottom of the sump or can I rotate it and hang it above the sump so the inlet is running vertical and therefore forego the drilling of the tank?

All help greatly appretiated

chemisfun11 · 03/10/2006, 02:25 PM

I don't think you can mount that pump vertically. It would create pressure and potentially give you a decreased flow rate.

Avast Marine · 03/10/2006, 06:15 PM

OK so I guess I can drill it anybody have thoughts on pipe ID?

Avast Marine · 03/10/2006, 08:12 PM

Please Help

Oaktonreef · 03/10/2006, 08:24 PM

Just use 3/4" pipe for your return...if you use 1 1/2" from your pump you will loose presure; and you do not gain anything from the larger pipe

Avast Marine · 03/10/2006, 10:37 PM

Quote:

Originally posted by Oaktonreef
Just use 3/4" pipe for your return...if you use 1 1/2" from your pump you will loose presure; and you do not gain anything from the larger pipe

OK heres what I don't get about that. If I use the RC head loss calculator with say a velosity t2 which is a similar pump to the one I am using and plug in all the numbers for total feet, elbows, valves, etc on 3/4 pipe I have a head loss of 9.16 feet and 571gph flow. Same scenerio with 1 1/4 pipe being the only change I get 5.52 loss and 633gph.
This seems like I gain pressure not lose it by going with larger pipe?

Avast Marine · 03/11/2006, 09:48 AM

^

03/10/2006, 01:32 PM	#1
Avast Marine RC Sponsor Join Date: Feb 2006 Location: Northern VA Posts: 2,446	Plumbing an external Pan World Pump? I was planning on starting my plumbing this weekend and just got my new pump. I was going to use 1 1/4" plumbing from the overflow and split a Y, run 90% to the skimmer section of the sump and 10% through the fuge. Both off sets of the Y will have 1 1/4" pvc and ball valves. On the return the pump has 3/4" threaded inlet and outlets. So on to my questions.... Should I use 1 1/4" for the return pump on both ends and reduce right at the pump with a bushing or run 3/4" for the entire return? Do I really need 1 1/4" after the Y from the overflow running to the fuge if I only plan on 50 - 75 gph or should I reduce to 3/4"? Last one, does the pump have to be oriented so the inlet flows through a bulkhead at the bottom of the sump or can I rotate it and hang it above the sump so the inlet is running vertical and therefore forego the drilling of the tank? All help greatly appretiated

03/10/2006, 02:25 PM	#2
chemisfun11 Registered Member Join Date: Sep 2004 Location: Bellmore,NY Posts: 288	I don't think you can mount that pump vertically. It would create pressure and potentially give you a decreased flow rate. __________________ I wish I could think of something clever to write here... Current Tank Info: Custom 170 gallon 54"x30"x24" low iron rimless glass tank, 20g fuge, 100g sump, AquaC EV 240 skimmer, Geo Calcium reactor

03/10/2006, 06:15 PM	#3
Avast Marine RC Sponsor Join Date: Feb 2006 Location: Northern VA Posts: 2,446	OK so I guess I can drill it anybody have thoughts on pipe ID? __________________ Dan Don't rush art, you get bad art.

03/10/2006, 08:12 PM	#4
Avast Marine RC Sponsor Join Date: Feb 2006 Location: Northern VA Posts: 2,446	Please Help __________________ Dan Don't rush art, you get bad art.

03/11/2006, 09:48 AM	#7
Avast Marine RC Sponsor Join Date: Feb 2006 Location: Northern VA Posts: 2,446	^ __________________ Dan Don't rush art, you get bad art.

03/10/2006, 08:24 PM	#5
Oaktonreef Registered Member Join Date: Jan 2006 Posts: 34	Just use 3/4" pipe for your return...if you use 1 1/2" from your pump you will loose presure; and you do not gain anything from the larger pipe