Does anyone know what the gpm flow of the wagner control valve (spool) is? I have 2 of them and I decided to replace,not rebuild them. I ordered a new one but I didn't pay attention to the gpm on the new one until it arrived. When I opened the box I realized the new one is only 8 gpm, I don't think this is enough,and the hydraulics will be too slow. I put on a newer pump that is higher volume output,aprox 25 gpm, and an inline filter rated at 25 gpm.I eliminated the old inline strainer type filter because I don't feel it was doing a good enough job. I'm sure I need more gpm than 8gpm. Thank and God Bless, Beth and Allen.