40 to 60 degrees clockwise relative to the transverse centerline of override stem 90 as seen in fig8 and thus may be similarly offset relative to flat surface 94 of cam 93 preferably this offset range is about 45 to 55 degrees and optimally at 50 to 55 degrees this optional offset is not mandatory but does offer a bit of additional dwell or overlap between the actuation of cam surface 96 and the subsequent actuation of lateral edge 132 as will be discussed in more detail hereinafter defined between spaced cylindrical portion 124 136 and 140 are annular cylindrical grooves 138 and 142 respectively that serve to retain further sealing o rings 96 fig2 as best seen in fig2 an override stem retainer 112 is preferably threaded into stepped bore 82 for further axially retaining override stem 90 in bore 82 when solenoid actuation assembly 54 is removed from valve body 22 in addition an override cap 114 is also threaded into stepped bore 82 and is removed only if and when there is a reason to manually activate override assembly 80 as best seen in fig2 when override assembly 80 is installed in its bore 82 such that cam flat surface 94 is parallel with the bottom wall surface 63 of plunger member 62 override stem bridge portion upper surface 104 a fig1 when override stem 80 is turned in the counter clockwise direction will after a slight rotation engage the bottom annular surface of solenoid attachment nut threaded portion 56 and thus be stopped from further rotation if override stem 90 is turned clockwise camming surface 96 will after a slight rotation engage plunger.