![Fig. 1: Drain Pump And Check Valve Housing - The Appliantology Gallery - Appliantology.org - A Master Samurai Tech Appliance Repair Dojo Fig. 1: Drain Pump And Check Valve Housing - The Appliantology Gallery - Appliantology.org - A Master Samurai Tech Appliance Repair Dojo](https://appliantology.org/uploads/gallery/album_22/gallery_4_22_653506.png)
Fig. 1: Drain Pump And Check Valve Housing - The Appliantology Gallery - Appliantology.org - A Master Samurai Tech Appliance Repair Dojo
![Is it OK to add a check valve for the dishwasher drain hose? I'm getting dirty sink water back flowing into my dishwasher. Have a loop but it's not working apparently? : Is it OK to add a check valve for the dishwasher drain hose? I'm getting dirty sink water back flowing into my dishwasher. Have a loop but it's not working apparently? :](https://i.redd.it/ezu9x4me9owa1.jpg)
Is it OK to add a check valve for the dishwasher drain hose? I'm getting dirty sink water back flowing into my dishwasher. Have a loop but it's not working apparently? :
![ForeverPRO 8520839 Collector W/Check Valve for Whirlpool Dishwasher 905548 AH396558 EA396558 PS396558 - Walmart.com ForeverPRO 8520839 Collector W/Check Valve for Whirlpool Dishwasher 905548 AH396558 EA396558 PS396558 - Walmart.com](https://i5.walmartimages.com/asr/22fc7ff3-af94-44e4-b1cc-d06327e707a3_1.3dfad0829fed1aea1453bc7363935ace.jpeg)