Way cool!
If it's anything like the Doyle Vac-It at the gas station I worked at in the early 70s, it will have unremarkable water lift but tremendous airflow. Looks like it uses a 2-1/2" hose, and the motor appears to have a separate cooling fan, which could mean it's a wet/dry machine. If it's operable, please post a YT video of it running. It's definitely a machine to hang onto if you have the room.
The National Super Service Co. is still in the commercial floor care business as NSS Enterprises. Below is a link to their products page.
Joel
Comes to the Rescue!
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