Response to Hello Ronald.  The Custom Molded Products Air Relief Valve Assembly 4655-03D is NOT compatible with the Pentair Triton II Fiberglass Sand Filter.  The Air Relief Assembly Kit by CMP for Pentair Triton II is the compatible assembly.  The Air/Tee Bleeder Assembly (154689) is identical in both assemblies, however, the filter attachment points are not.  The Back Mount Pressure Gauge is a compatible pressure gauge with the Triton II Air Relief Assembly Kit.

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