Controllers that do not rely on the pump pressure switch to stop the pump when the water flow stops. DE (Dead End) To access this post, you must purchase WCA Membership. Related postsThe Most Common Mistakes in Pure Water CleaningApril 11, 2023Unger nLITE Carbon 24K WFPJuly 21, 2022Pulex UniHandleJuly 21, 2022Soft Wash MixingFebruary 23, 2021X-Jet Nozzle ManualFebruary 23, 2021Soft Wash Roof CleaningFebruary 23, 2021