Is there a maximum pressure differencial of a LLSV. Application runs 275 head 60 suction and the stinking solnoid valve sticks open unless the delta P is lower at around 225 head, 60 suction. Brand new alco/emmerson 7/8 LLSV. Swapped the internal diaphram and head assembly out from another new valve, same thing. Wanted to make some calls but did not have time, thought I would try here. Thanks.