WSKS3040F0WW General Electric Washer - Instructions

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 unscrew the two halves and see the flapper.
A little piece of rubber, about 1" in diameter
All suppliers gave me but two choices. One large (size given) one smaller.
After years of searching, all I needed was a flapper valve. Not the whole check valve.
I found it hear for under $10

Thought it might be check flapper valve on drain pump, so I replaced fairly easily, per instructions. When doing, I noticed the attached relay wires were not secure. When it was on the drain cycle one of the relay wires vibrated badly and loosened the connection enough to only work occasionaly. Would like to put new relay on the pump but they do not sell separately from the pump. (one assembly). I resecured connection and will wait till relay gives out and buy new assembly, but for now it's working perfectly!

Removed the dishwasher to get at the defective parts and removed,than replaced the two check valves and reassemble.

Unscrewed the current water Spicket install the new appropriate special Fossett for the dishwasher it worked correct should I get it overnight but it was worth it

Took part out of plastic, and i stalled on to faucet using elbow grease, thats it.

My dishwasher being 12 years old had accumulated a fair amount of debris/muck in the sump area located near the back beneath a plastic cage. I removed the cage and cleaned out the sump area. That solved the standing water issue for about two months and then it returned but this time the water depth was about 4 inches compared to an inch. I then changed out the "piston and nut assembly" which is a very easy repair but in my case didn't fix the problem. I then replaced the "check flapper valve" (ie check valve) located in the back and underneath where the drain line connects. That solved the problem and it is working better than it has for years. In doing this repair, one must disconnect the drain line. In so doing, I noticed the drain line was completely clogged for a distance of 12-18 inches where it connects to the garbage disposal. It took me 20 minutes to clean out the drain line. So there were probably several issues, all involving debris/muck buildup and a failed check valve that caused the standing water problem. My advice, since parts are relatively cheap, is to purchase the 1) piston and nut assembly, 2) flapper check valve, and 3) drain line if your dishwasher is fairly old or is used hard. You also will need to clean out the sump area by removing the trash rack cage. Replacing the flapper check valve is the most involved, so you may want to do the other things first to see if they solve the problem and then tackle replacement of the flapper check valve and drain line. By the way, GE parts blow-up diagrams don't even show or list the flapper check valve part. I won't have known about it if it wasn't for a post by someone else on this website. My flapper check valve was slightly torn at the hinge preventing it from seating properly. NOTE that the replacement valve was a bit oversized (it did not have the same diameter as the old valve)for the drain line opening for my particular model and it took some careful finesse to get it to stay in position while replacing the threaded cap that holds it into place. So don't be discouraged if it takes a few attempts to get it to stay in place and oriented properly when replacing the cap. The hinge should be at the top and the word "OUT" shown on the valve being visible (facing away from the dishwasher). This particular fix would be very much helped by an instructional video by this website. I am mechanically inclined so it was easy for me to figure it out but that might not be the case with others.

I sopped up all the water in there and pulled out the lower rack, then disconnected the electricity and water pipe and drain hose. Then I unscrewed the front kick plate/cover and removed that. Then I unscrewed two screws at top of unit from the counter top, and pulled the unit out. It is surprisingly light weight. I rolled it over on its right side, and took off the short drain hose where the flapper is, and pulled the old one off and put the new one on and reversed the procedure to reinstall. It was very easy to fix, especially with your Youtube video! THANKS