Compared to the Mazzei, beats me. Didnt they stop making those? Its for my new needle wheel skimmer. Solid cast acrylic rod tuned down on the lathe to fit pvc fittings. Drilled with tapperd bit from 7/8 down to 3/8 on both ends. Easy takes about 10 minute ,no nipple to break and easy to clean. I tested on a Dolphin DP900 with an automotive vac transducer.sherm71tank said:Ok, I'm interested. How does it compare to a Mazzei 784 with a Dolphin DP-1200 pump ( approx 800 gph @ 12' head)? How did you make it? Details?
Very cool I just looked at their web site and my venturi works exactly the same way (twin oposing funnels). I am using the Ocean runner for the skimmer, dolphin was for testing. The ocean runner, sedra or what ever need the venturi. Needle wheel or not the venturi bring in air. The needle chops the water and mixes the air. Produces very fine bubble. I'm no engineer but it works. You could easily install in line with cheap pvc connectors.sherm71tank said:They have definitely not stopped making the Mazzei. Those injectors are used for more uses than I would even try to list. Also, if its used for feeding a needlewheel then its an "eductor" type more so than a true venturi. The needlewheel does the mixing and the "venturi" is not nearly as important as it is in "Beckett" or other models that are much more dependent on flow rates and pump pressure. I think the Oceanrunner line of pumps may be more to your liking as they are competetive in pricing to the Dolphins and no additional parts or venturis are needed. They also come with true needlewheel impellors.
I tested it as a in line venturi on the dolphin, pulls alot of air in. The Ocean Runner is a 2700 kit made for the turbofloater. It came with nothing in the way of educator or venturi. What you see is what you get.sherm71tank said:That sure is a compact design and I like that!!! It also looks really cool. Have you tried using it as a venturi? Also, what type of Oceanrunner is that? Did you try using the eductor that came with the Oceanrunner? It measures 1.675" in length.
Thats odd I just got this one new. I do have a aquamedic venturi its one of the four I tried with poor results. Euro reef does it, I dont see why you cant use two. Two would be one huge skimmer.sherm71tank said:I see. They come with an efficient eductor if you order the 2700 or 3700 model now. I agree on the efficiency of the design and am currently exploring a skimmer utilizing one or more of these pumps both the 2700 and the 3700. I love the idea of a recirculating needlewheel to increase air volume and contact time.
DonW said:Ive heard of people putting educators on their returns. What do you think about turning one down to fit a return pipe?