In taking the Sherwood manifold off my set of doubles this morning to VIP the tanks, I discovered the manifold bit has a single "bonnet" o-ring instead of the more modern double o-ring design. I'm not comfortable with this and would rather relegate the manifold to my historical collection and convert the tanks to left and right SM.
Does anyone have any left and right 7/8 UNF scuba valves for sale? Are they common?
Peter
