So I have a 1972 Kitchenaide dishwasher. Its worked great for the 10yrs I have owned it. I bought it for 50$. The seller told me it was 10-15yrs old. Imagine my surprise when I found out it was from 1972!!! I have a tiny kitchen and its a portable, not many full sized portables on the market so I was sad when it stopped working. I took it all apart and in one of the little valve/relay thingies, I find a small shard of glass. The valve has a rubber diaghram and a spring so I guess it works on pressure. Put her back together, and she lives! I think these things are literally made to last forever. All of the guts and inside parts look like new....nary a speck of rust or corrosion. Anyone else have a vintage dishwasher??