Came across this Watsoc access valve. Nicely made, steel construction, seems older, and it has a 1/4" flare fitting on it for A/C hoses. But the business end is an odd (for air conditioners) thread, with a standard screwdriver tip as the working part. Not a piercing valve. So I'm stumped as to what it's actually for. Possible auto tool, or used in vacuuming/reclaiming (their CA-1 tool).
Watsco's website is basically useless - I guess they're more just into the corporate end now with subsidiaries making products.
Any ideas?