I'm on my 3rd or 4th season with the Liquidator and the valves are ok but one of the tubes connecting the John Guest fittings went hard and started sucking air causing my pump to lose prime. Instead of replacing all the plumbing I'm going to a Stenner dosing pump and 15 gallon storage tank. I will be nice to be able to store chlorine in the tank and only fill it once or twice a season instead of pouring in bottles every other day or so.