I needed to buy a new drain hose for the KitchenAid I am installing because the one that was connected to the GE was too big. Long story short I left the check valve assembly at Lowes and it got thrown out and now I cannot find the part, does someone know where I can find one (whirlpool part # 4162920) or is it ok to just not put it in as long as the drain hose is elevated higher before connecting to the disposer so water will not back into the dishwasher?
Thank you in advance for your help.

Thank you in advance for your help.
