The quality for the price is great! The valves appear of high quality and the unions make it an easy install. I like that you can mount this multiple ways including the temp and pressure valves can be installed on either side of the valves. Very good overall.**My main issue is only with the fill valves, there is not enough threads on them. When using standard washing machine hose to fill, there wasn't enough threads to make a good seal. Lucky for me, I don't need to fill here as this is the lowest part of my system and I put in proper fill valves higher up with my pumps and everything else. I also did not need to use the included bleed valves as they are low on my system as well.