We had our local irrigation meeting and had an enthusiastic presentation by who I think is the inventor and owner of Valvette Systems Corp. http://www.valvettesystems.com/ I see a lot of practical service applications for this stuff and got some samples to try out. The main thing is that any adjustments made to the nozzle through these will stay put. I'll play with these and give feedback later. Also had a demo by X-10 Light control switches. Out of my league but definitely something for the light guys. Poor Henry won the 150.00 raffle but wasn't there cuz his boss had him working late. (Me) Should I give him that as a bonus? The 150.00 gets increased each meeting and only people at the previous meeting can win it.