Just took a look at my Healthways manuals from the 70's. They don't show a post valve, but all valves shown use a seat that is standard to most current valves (Thermo, XS, Sherwood). My memory isn't good enough to picture what is inside those valves. If you post a picture of the seat, I can get a better idea what you need.
In this topic there is a dissambeled Healthways K Valve from the 60's. If the seat in the post style valve is similar, this might be of help? Sorry for being over a year late, but better then never. Mark
The photos are bad, but the Healthways and Dacor valve seats were basically the same, if that is of any help?
Last Edit: Mar 19, 2017 18:47:25 GMT -8 by tomcatpc
New Diver who sees diving with vintage gear a fun hazard, not a safety hazard. "I just want to dive my Scubair 300 and not get hassled by The Man!" USN 1989-1993.