Mazzei Injector Protein Skimmer

in this discussion,I am wondering why you folks weren't considering the pressure in your discussion of injectors. If you look at the tables for these injectors, it is clear that they work best with a pressure drop of 30 of 40 psi.

look on the tables at http://www.mazzei.net/industrial/tables.htm and it seems like one gets quite poor air volume performance compared to higher pressures.

I seems like the numbers they are talking about gpm of flow are actually flow through the system, not the rating of the pumps.

since 1 psi=2.31 ft of head, most pumps we are using don't give much more than 5 to 10 psi of presssure drop max. So performance isn't likely to be optimal with pumps like mag 7 has a max of 12.5 feet or approximately 5 psi pumping power.


I am not convinced these are the way to go. Can someone comment on why I don't have this right if I am thinking about it wrong.
 
I haven't used one, but I can offer these suggestion:

(1) Compare the performance of the Mazzei injectors to other methods (like traditional venturis, becketts, etc), rather than comparing our pumps. Running a 30-40' pump with our skimmers isn't cost effective when considering the cost of the pump or the electricity.

(2) Only so much air can be entrained before the bubbles merge and the skimmer stops skimming. There is published info about bubble size and air/water ratios out there somewhere.

(3) In what way are they better at higher pressures? For the 384, I get these numbers:

At 5 psi inlet pressure, 0 psi outlet pressure: 0.66 gpm motive flow, 4.0 scfh Air suction. Air/motive=4.0/0.66=6.06 (in whatever wierd units).

At 40 psi inlet pressure, 0 psi outlet pressure: 1.78 gpm motive flow, 12.0 scfh Air suction. Air/motive=12.0/1.78=6.74 (in the same wierd units).

The motive flow/Air suction ratio changes very little as pressure increases. Was there some other way in which they perform better with higher inlet pressures, that would justify buying/running pumps with 40' of head?
 
Thanks,

3) make sense. The only way 40 psi is better is that you get more total air.

I haven't used one either, and there aren;t a lot of numbers for other methods pin wheel etc so I can't really compare performance.
 
Hi all,

Need some valuable help from the mazzei experts out there as i am from malaysia and no one know anything about mazzei.....

Actually i have a spare rena flow 6000 pump ,1250gph, and a Hagen laguna 3000 which i intend to use it for my DIY mazzei skimmer. Can someone pls tell me which mazzei injector should i use for each of the pumo respectively. Thank you very much

Cheers
Rick
 
Okay, resurrecting an old thread. Are people still using their Mazzei injectors? Are you happy?

I'm considering using a mak4 to run 2 injectors, each into a 6"x26" skimming body. Are their any suggestions on which injectors to use?

Any help would be appreciated, Thanks Kent
 
Kent E said:
Okay, resurrecting an old thread. Are people still using their Mazzei injectors? Are you happy?

I'm considering using a mak4 to run 2 injectors, each into a 6"x26" skimming body. Are their any suggestions on which injectors to use?

Any help would be appreciated, Thanks Kent
Click to expand...

Im using a Mazzie 1064 1 inch (i think thats the model number) powered by mag18. I have running on my 120 FOWLR tank and very happy with it. Pics on my gallery....

arjay
 
Arjay,
What are your opinions on the comparison of the Mazzei and Beckett?
IIRC, the mazzeis need a lot of head pressure to draw in a lot of air. Though the Becketts work best in that scenario as well.
THX
Chris
 
...which is why I asked about its comparison to the Beckett. I have used many mazzeis over the years- some 3"ers, but only a couple Becketts. I wanted to know how both worked on the same skimmer body.
 
H20ENG said:
Arjay,
What are your opinions on the comparison of the Mazzei and Beckett?
IIRC, the mazzeis need a lot of head pressure to draw in a lot of air. Though the Becketts work best in that scenario as well.
THX
Chris
Click to expand...

H20ENG, i just happen to use both Beckett and Mazzei injector with my tank and the diffrence between the two is that the Beckett pulls more junk than the Mazzei skimmer. However, the mazzei produces finer bubbles than the beckett. As far as the head pressure, im not quite sure...


arjay
 
I learned today that Mazzei is properly pronounced "mahtzay" but even Mr. Mazzei concedes to "mahzzay".
 
None taken, Kent.
I know how easily threads get hijacked.

I learned long ago that it was Mahtz-eee (used them for large ozone injectors back then), but still have a tendency to say Mazz-ee:D

Thanks Arjay. You ought to hear the racket they make at 100psi pulling ozone into a 4" line. Absolutely deafening:eek2:
 
H20ENG said:


Thanks Arjay. You ought to hear the racket they make at 100psi pulling ozone into a 4" line. Absolutely deafening:eek2:
Click to expand...

Wowwww, i wonder if you can drive this mazzei with a realy huge pump.....

arjay
 
Yup. Mazzei has charts for all their venturis, showing gpm / psi / scfh air injected.
There are actually quite a few 1" models as well as smaller and larger. Different orifices for different applications.
They may have it on their web page. Yup, here you go. Go halfway down for air injection rates at given pressures.
Have a look around the site, too. Good reading and huge venturis!!

http://www.mazzei.net/agriculture/tables/Performance Table US.pdf
 
My question is where do I call to buy "one" of these? So far I tried calling them once to get info on purchasing a specific model, the person was quite rude to me and told me that the injectors werent meant to be used the way I wanted to use it. I know Aquaticeco sells one model, but I would like to select one from the chart.
 
I found a few:
Poolandspa.com
lifereef.com
dripworkusa.com
lowpricepoolsuppy.com
aquaticeco.com
 
I have a 978 modal that I'm not using. Was going to build a hybid skimmer 12" X48" but decided against. I know this is not the for sale or trade section . If interested let me know and thanks for the awsome info
 
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