Pentair 24850-0105 Valve and Gauge Assembly Replacement for Select Sta-Rite Pool and Spa Filters Valve and gauge assembly replacement Fits Sta-Rite System 3 Modular Media SM series pool and spa cartridge filter model S7M120, S7M400, S8M150, S8M500 Compatible with Sta-Rite System 3 SD series pool and spa D.E. filter model S7D75, S8D110 Fits with Sta-Rite System 3 SS series pool and spa sand filter model S8S70 and S7S50 Valve and gauge assembly includes pressure gauge 2-inch, air release valve, nipple, adapter bushing, and O-ring.