275tx - 4/15/2019 15:52 On my 4440 when I switched from fertilizer back to aim command I had 10 that wouldn’t work. Don’t know what the answer is because it’s pretty expensive if that happens every time Wowsers. Does your 4440 have Raven Hawkey components for AIM Command or does it have Capstan Ag Components? I would think a 4440 is new enough to have Raven components? If this is what's going to happen every time then I think I will buy: 1. 72 of the manual on/off check valves 2. 72 weatherpack connectors to cap off the AIM Command solenoids. Then I'll just pull the AIM Command solenoids clear off when I need to fertilize. | 
AIM solenoids with fertilizer
