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Customer Questions and Answers for Check Valve Assembly by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM8730069
Manufacturer Part Number: 675238

The Check Valve Assembly is an OEM replacement part for Whirlpool dishwashers. It is a component that regulates water flow and pressure, allowing water to enter the dishwasher during designated cycles but preventing backflow. The check valve plays an important role in the overall water distribution system of the dishwasher. 

Causes of a bad check valve can include mineral buildup blocking the valve ports over time, damage to the valve mechanism or seals, or decreased valve integrity from wear and repeated use. 

Symptoms of a bad check valve include:

  • Leaks or water not properly entering the dishwasher 
  • Incomplete or inefficient washing and rinsing cycles
  • Strange sounds coming from the water inlet area
  • Higher water usage due to faulty draining 

Note: O-ring included.

This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

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Questions & Answers

For Whirlpool Check Valve Assembly (Part Number: OEM8730069)

Nicknars for Model Number WDT780SAEM1

Hello, I recently bought a house and after living here a little while we noticed a bad smell coming from dishwasher. Pulled dishwasher out , and checked hoses, and sink and all was good. Smell goes away after washing but will return in about three days. I monitored it after a wash and discovered. Filter area. Is filling with water and turning nasty. This has the symptoms of a check valve not working, but does this unit have a check? Any info would be swell, thanks

1 Answer

Nicknars, Thanks for your question and based on the information provided you may need a high loop in your drain. A high loop prevents wastewater back-flowing from your sink to your dishwasher. If the drain hose is not elevated, there is a potential for water to run the wrong way through your drain hose and can cause standing water at the bottom of your dishwasher. The high loop also protects mild cases of back siphoning due to increasing the hydrostatic pressure that the water needs to overcome to get over the loop.

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1 Answer

Stephanie, the most common cause of odor would be from the dishwasher not being ran through at least a rinse cycle every day. As there is water that sits at the bottom of the sump, it can create odors. However, if water is draining back into the unit after it is done, then it is likely that the check valve in the drain loop WPW10545278 is not operating properly.

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1 Answer

Ron, With the water continuing to run even with the unit in the off position then this would most likely be a faulty water valve which would need to be replaced. The part number for the valve is W10844024.

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1 Answer

Hello Mik. If the hose is not clogged, then the pump is bad and will need to be replaced on the unit.

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1 Answer

Lee, You will want to turn the unit on and check to see if the unit is getting 120 vac to the water valve. If it is then the water valve is faulty and would need to be replaced.

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1 Answer

Jim, Yes, the 675238 / 675238 Check Valve assembly is designed to keep drain water from entering the dishwasher tub, in the event of a drain problem. The "piston and nut" is used by a different manufacturer and serves the same purpose. All manufacturers now have some type of "check valve" on the drain system of dishwashers.

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1 Answer

Tate, Normally when the thermal fuse is blowing it is due to a higher than normal amp draw on the motor. Check the pump to make sure that there is nothing in the pump that would cause it to jam up. If this checks ok then the motor would most likely be the cause.

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1 Answer

Hello David, Most motors have a small hole made in the bottom that a nail or similar item can be inserted into that will effectively lock the motor so the impeller can be screwed out.

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David for Model Number SDU30013 Whirlpool

I have a whirlpool sdu30013 dishwasher that does not drain. I observed that the impeller does spin when the motor is on. How do I remove the impeller to get to the pump below? The whole thing spins when I use a screwdriver on the screw from the top. Where is/how do I get to the check valve since that is apparently a common failure point? Any other ideas or suggestions on causes? I verified that the garbage disposal that the drain hose is connected to has the knock out plat removed. Thanks!

1 Answer

Hello Dave. Hold the impeller with your hand to keep it from turning while removing the screw.

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