A2Z Ozone Venturi Injector, 3/4-Inch | For Ozone Generator, Ozone Resistance, High Quality, For Pool and Spa Generators

This device works great. I use it on my home built cold plunge tup and it helps keep the water clear and clean.

It's installed I'm just not sure its doing much?

Venturi installations can be a trick, but never go with recommended size venturi for ozone use. Especially if you need to run the Ozone unit more than 6 feet away. return piping for mine was 1 1/2" and I started with the 1/4" recommended...big mistake. Then got the 3/4" and it helps but still seems I have to choke the pump due to back pressure, so I will get the 1" for the 1 1/2" return plumbing with 3hp Pent-air variable, being set to 660w vice the normal 375w is a bit of a drag. I have 3 Gph output normal and on concentrated it nearly doubles, so more suction the better if super ozone is used.

Worked great for our ozonator for our plug n play hot tub! No issues so far.

Bought this venturi to replace one on our water bottling equipment. The listing does not mention the suction port pipe thread size or type! We typically cut off the hose barb and just use the threads on the suction port which are typically 1/4" npt on the 3/4" Venturi's... This venturi has what seems to be 3/8" compression type threads on the suction port which makes it very difficult to get to 1/4" NPT. I didn't realize it till I had stripped the threads trying to put a 1/4" SS check valve on the suction port :( I give it 2 stars because the listing doesn't included all the basic information i.e. inlet, outlet, and suction port connection type... now I got a worthless hunk of plastic. Here is the one I have to order now for my application: https://www.amazon.com/gp/product/B014JYD48W/ref=pd_sbs_86_5?ie=UTF8&pd_rd_i=B014JYD48W&pd_rd_r=QSPDG4Z1EWR1SKDERCJQ&pd_rd_w=QLsoJ&pd_rd_wg=eAB32&psc=1&refRID=QSPDG4Z1EWR1SKDERCJQ SOOOOO if you need 1/4" Male NPT on the suction port dont order this one from A2Z