Waterco Micron Series SM 600 900 2" Multiport Valve (2290512) chemicalfeeders Dark grey finish supports a Dark grey finish supports a modern spa interior look A focused replacement like this is especially useful when the surrounding wet end parts remain serviceable and the weakness is isolated to the diffuser itself Using the right 2 inch valve helps preserve system performance and keeps the repair aligned with the intended filter design The Waterco Micron Series SM 600 through 900 2 inch multiport valve is designed for compatible filter systems that require a larger 2 inch valve for organized control of multiple operating modes