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Continue to ChatEMERSON AVENTICS R432000638 - NPT1/4, Semi-Automatic Drain, C/W Guard, Series AS2-FRE Filter Pressure Regulator (AS2-FRE-N014-GAU-080-PBP-HO-05-PBP-HO-05) https://www.valves-direct.com/product/emerson-aventics-r432000638-filter-pressure-regulator/