Drinkwell Original Flow Adjustment Kit Replacement kit for the Drinkwell Original Fountain. This 2-piece kit includes the stator and flow control knob that affix to the pump to adjust the water flow.FeaturesCompatible with Drinkwell Original FountainMore InformationPackage includes 2 replacement filters. Filter fits all sizes of the Healthy Pet Water Station, sold separately. For best results, water filter should be replaced every 6-8 weeks, depending on pet usage.Be proactive and purify your pet's drinking water with the Healthy Pet Water Filter. Fresh water will encourage your pet to drink more and help prevent unnecessary illnesses. A better hydrated pet is a healthier pet.System IncludesStatorFlow control knob