they are same like you can see here:
http://www.coolingmist.com/detailmain.aspx?pid=QBRCV01
Im sorry but there is nothing to photo at my checkvalve, just internal o ring (seal) felt off of it. Previous checkvalves have som problems with sealing, probably also with rubber o ring. It looks like this o ring is pushed out of it seat after time....
I have basic WI kit (just pump, pressure switch, nozzles), including solenoid into circuit tooks me 5 minutes, really nothing hard about it...Solenoid is acutated directly by switched pump voltage, works fine...