Looking for info on the order of manufacture for these Robertshaw regulators. Both share the same model / patent #, however
they differ slightly in a couple of details as seen. There is a step in the body casting of one which is missing on
the other. Im curious if the step was put there to strengthen up the nipple from stress breakage? or something.
Guessing the one with the step would have come later in the manufacturing process. The one attached to the hose appears to be
missing the gasket that is evident on the other. Any thoughts?