No Plumer could help me. No one heard of a dishwasher check valve. My dishwasher was an ISA. I was lost until i found the relationship to Kitchenaid. Then sears. Vuela!
The valve was there, but unavailable.
A few more links, and the term "flapper" came up.
Well, my dishwasher check valve HAD a flapper inside. Although a plastic pos, i could ...