First, it sure seems that the joker valves one the Jabso twist-n-lock, Raritan PHII and Groco manual head are functionally interchangeable. Yes, there are minor differences in the molding and the flange on the Groco is about 1/16-inch thicker, but I betting all will fit and all will work. I'm sure I've heard of folks swapping the Jabsco and Raritan valves. Good to know, if the store only has one brand.
Second, is one of these better, in anyone's expereince (you've tried both in the same head)? Yes, there are price differences, but that's not what I care about.
Second, is one of these better, in anyone's expereince (you've tried both in the same head)? Yes, there are price differences, but that's not what I care about.