I have a Black and Decker central Vacuum from 1971. When you open the door to plug in the hose, a low voltage contact is made whioch turns the vacuum on. Does this door do that. Also the pipre is 1 1/;2 inches. Will this work?
Yes, there are two contacts inside each inlet. When a hose end goes in, the metal from the end shorts the contacts and the vacuum starts. Some hoses have a switch on the end. They all work with these inlets too. The inlets fit into backing plate holes with a diameter of 1-5/8 .