Please note: This is a Sole Source Notification. BECSys Chemical Controllers, replacement parts associated with BECSys controllers, and other related equipment associated with the controller operations. In addition, parts and services associated with commercial pool operation proprietary filtration systems: (1) Fluidtrol - filters/strainers; (2) Eko3 - backwash valves for the filters; (3) EPD - media filtration system; (4) Yaskawa - Variable Frequency Drive that controls the filter; (5) Fluidra - commercial high-rate sand filtration system; (6) Hexagone - Enduro -TurboClean(TM) Pool Vacuum System; The parts and services associated with commercial pool operation proprietary UV disinfection systems. (1) Neptune Benson - ETS-UV systems.