hammerhead gold pump setup?

[glarior]

I have ordered a Reeflo hammerhead hybrid gold pump and trying to figure out how I will hook it up.

The pump has 1.5" inlet/outlet. Going to drill my sump to connect the pump but should I go with a 2" bulkhead or 1.5"?

[rrasco]

Are you sure the inlet is 1.5"? It might be, but my reeflo was 2" inlet and 1.5" outlet. Make sure you adhere to the rule of 10D to avoid cavitation on the intake side.

[Scutterborn]

Your going to run a hammerhead on a 120?

[glarior]

What is the rule of 10D? I google but it comes up with tax stuff

Doubled checked the site and it says 1.5 in/out

[glarior]

Can I run it like this?

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[Scutterborn]

10D refer to 10x the diameter of the pipe in length. I.e. 2" pipe would require 20" of straight pipe at the inlet.

[rrasco]

10D refer to 10x the diameter of the pipe in length. I.e. 2" pipe would require 20" of straight pipe at the inlet.

Correct. Only if there is a turn though, I think. So if you come straight out of the sump into the pump, shouldn't be an issue. If you were to come out of the sump, turn 90 degrees, then have 3" to the pump, then you would have issues.

I also believe the inlet needs to be below the water level, i.e., 'flooded'.

Taking a step back though, Ben may be onto something, a hammerhead might be a tad overkill for a 120.

[Scutterborn]

It won't "self prime" if above the water level. It's not a vacuum pump

[glarior]

That pump is going to replace the 4 sicce syncra 5 pumps that are currently running the combined 240/300 tanks. I assume the 120 came form my other post and that is a totally different setup.

I think I will stick with straight out of the sump to the pump. With that should I choose 2" bulkhead and convert down to 1.5" at the pump or stay 1.5" bulkhead/pipe to the pump?

[rrasco]

Yeah, I got confused. It was Ben's fault. :P

There is not much information out there on the rule of 10D, I know I've looked before. There is a pretty good discussion on RC about it and here are two documents I came across that mention it. I googled 'rule of 10D pumps'. It's more of a fluid dynamics/engineering thing than reef-specific. I'm sure there is more information out there somewhere.

http://www.pdhonline.org/courses/m134/m134content.pdf
http://www.pumps-filters.com/images/Rules_to_Follow_to_Avoid_Pump_Problems,_2-16-00.pdf
http://www.reefcentral.com/forums/showthread.php?t=2239620

As per your question about pipe size before the pump, I'm not sure. I know you can reduce friction by over-sizing the outlet pipe on pumps, but I'm not so sure. My gut says yes, but I'd have to validate that before I bet on it.

[Scutterborn]

I'm running a snapper and use a 2" inlet. With a tight 90 at the outlet of the sump. I get almost no swirling on the intake and no cavitation on the pump. I completely disregarded the 10d rule. Lol. I got lucky.

http://img.tapatalk.com/d/13/07/03/5evyne7a.jpg

[BBQHILLBILLY]

you can run the hammerhead with siphon over the sump wall without drilling the sump. That hammerhead uses a lot of water.

[glarior]

Here is what I think I am going to do... unless everyone thinks it is a bad idea lol.

Intake: Siphon over the sump wall using 2" pipe with check valve to prevent loss of suction during power outage. Reduce to 1.5" for pump. There will be screw cap to allow for priming.
Output: 1.5" to 2" PVC that will 'T' converting to 1.5" PVC and have 4 outputs that are 1"

How does that sound?

[Scutterborn]

I wouldn't run the intake that way. Do you not want to cut a hole in the sump? If so, I'd just run (2) sicce 10 submersible pumps. It think your just going to end up with a headache before too long.

[rrasco]

Yeah, I wouldn't run the intake on that reeflo any other way than flooded (or primed).

[glarior]

Okay. Will add the 2" bulkhead. I tried to avoid drilling the sump so I Dont have to drain 70-100g of sw. Today is the day to work on it

Thanks for the input everyone

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[BBQHILLBILLY]

the hammerhead puts the dart to shame, that there is a lot of flow, that aint no dart, its hammertime

[glarior]

Haha... I should play that song when I turn the pump on. Roflmao.... hammer time

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[aquasport24]

you meant a check valve at the outlet during the power outrage right?

[glarior]

you meant a check valve at the outlet during the power outrage right?

No, it would be a check valve in the sump to keep the pump primed in a power outage. A check valve on the outlet would have been a good idea...

[glarior]

Updated: I drilled a 2" bulk head into the sump which goes to the pump. So far the pump is at 3/4 flow because the returns on the tanks can't handle it. I might switch to the hammerhead impeller.... not sure yet.

[Scutterborn]

Expect a big loss in flow if your going to run check valves.

[BBQHILLBILLY]

i would like an update on the hammerhead, please:bigsmile:I too would like to get back to that flow with a hammerhead. may get one soon. Cant touch this.

[glarior]

Here is one pic. If you would like to see more let me know.

Only thing I forgot was a Union fitting between the outtake and shut off valve.

Next to the pump is the one of four sicce syncra 5 I use to power the tank with. However, the HH puts out way more than those did... so much more I had to cut back the flow

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[BBQHILLBILLY]

so you followed that 10d rule, is that what you did with the pvc, and how does the sump look when 6000 gph is flowing through it? inspiring minds want to know:bigsmile:
may want to use hammerhead on next build.

[BBQHILLBILLY]

I used a hammerhead with a siphon and a 6ft sump, and reached the 3 times plumbing up over the back wall of a 210 and into the tank. no powerheads necessary.
thanks corydrysdale worked pretty good. I wasnt to sure how to drill it the right way, AND HOW much room to leave in the return chamber

[glarior]

so you followed that 10d rule, is that what you did with the pvc, and how does the sump look when 6000 gph is flowing through it? inspiring minds want to know:bigsmile:
may want to use hammerhead on next build.

I think I did follow the 10D rule by accident. I did what worked best with out having to buy new hose or run new PVC for the tanks. I will get pics and if possible low quality video tonight of the sump. The sump pushes some serious water and keeps my K1 kaldness turning then again its 5ftx2ftx2ft. The best part is I can run a lower sump level now!

[glarior]

So, I forgot the pics... try again tonight :-)

[glarior]

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[glarior]

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