Sitkadiver
Contributor
Well, it is not the AMF Voit valve. That valve has a peculiar squared body. So it is something else.
SeaRat
So the mystery deepens. Just making an uneducated guess... Perhaps it is from a manufacturer that went out of business? Sportsways had an SW logo on their valves. Healthways had and H. What other companies may have been around in late 60's or early 70's that started which had an R for a logo? Did Rondine make valves?