OR, it could have been a Beam System, Frigidaire,
AirVac, M&S or Eureka...even Dirt Devil, as they
ALL have valves available (although they call
them different things) that allow for 120VAC and
low volt at the same outlet! Keep i nmind almost
ALL of the CVS pipe, fittings, and valves out
there come from the same Canadian manufacturer,
and for the most part, they are COMPLETELY interchangeable!
And that Canadian manufacturer is apparently Hayden Manufacturing. And the SuperSystem is OEM'd by Hayden for all those other companies you've mentioned. That's why I said it was more than likely a Hayden SuperSystem that had been seen.