attention: both of the ones I got had a breakage in the five-way brass connection. on the second one I had to change it myself because I got tired of returns. it works just fine otherwise, moderate noise, I can't say it easily reaches the 3 bar I want, despite the 800w it consumes as a device and the negative pressure I have (I send from a tank on the roof to the house right below). The 3 stars are because it is stainless steel at a very good price, otherwise it would get two stars.