Got it for my 15amp under think heater and helped a lot

Kitchen sink already had a nice expensive double SS sink and quality faucet - just move into this house last year - and the end of the faucet's swivel spout has a pull-out end with a flexible hose to squirt around the sinks. The stream was solid and my wife wanted a shower stream effect as an option. I took the existing (plain) aerator off and installed a Neoperl Bubble Stream Dual-flow Aerator that I bought at one of the local (national chain) hardware stores...at the same time I ordered a Niagra Tri-Max Aerator. The Bubble Stream Dual-flow Aerator was supposed to have 0.5 gpm spray or a 2.2 gpm stream. We used this for about a month or so (until today) and we found the spray very weak, and the stream also pretty weak. (I don't think it was anything like 2.2 gpm.) Turning on the water, you got the spray by default and you had to pull down on the head of the unit to get the stream. Most times pulling down just dislodged the faucet nozzle's end hose unit from it's seating and you still had the faucet spraying. It generally took two hands to get the stream (which, as I said was very weak). Today I installed the Niagra unit - what a change! Now to change the flow it is a simple twist on the head of the unit! (The hose and head don't accidentally dislodge now!) and the 0.5 gpm is much stronger than the previous unit's 0.5 gpm shower, AND it's a more concentrated (narrow) spray pattern. (The previous unit's shower was much more dispersed and it "kind of showered everywhere!") The Niagra's other two settings of 1.0 and 1.5 gpm are both stronger than the other unit's 2.2 gpm stream. It should be noted that the Niagra's two stronger settings are both showers - there is no stream - but with the more concentrated spray pattern, there is less splashing..and my wife is OK with no actual stream setting. Anyway, it's the better aerator and it gets a full 5 stars.

Good quality and works perfect with what it does.

May be due to sediment, city water pressure or a little of both. On the lowest setting it does not spray well. Too much resitance? I like the light spray pattern. But i want a spray pattern. I turn it so it is in the middle of the low and medium setting and i get a spray pattern.

I have also noticed with the reduced water flow that pipes my start to rust. The water i use from a filter pitcher for cooking was turning yellow and tasted bad. I remove the aerator every so often and flush the pipes.

These things are great. Easy to install or swap out back to the original. We don't have a dishwasher (not because we are against them) and do manual dishwashing. This thing and also the non-adjustable one with single lower rate feel like they use/save much less water. To me, it's not inconvenient, uncomfortable or annoying. I just put a little water on the dish, a little soap, use the sponge pressure to clean the dish, and do a wash off/rinse. I feel like it's enough pressure. Also, I feel like there is much less water running in between dishes if you don't turn off the faucet. Also, you can easily turn up the faucet all the way and still save water instead of trying to think about only raising the faucet a little with a traditional faucet and aerator, so that's convenient. The only thing it does slowly is fill stuff with water, but I rarely do that, and if you need that you can pretty quickly swap it out for the original if you keep the original near by.