Air Separator; Type In-Line Purger; Nominal Size 1-1/4 Inch; End to End Distance 6 Inch; Body Material Cast Iron; Pressure Rating 125 PSIG; Application Hydronic Heating System, Automatic Air Vent, Expansion Tank; Applicable Standard IAPMO, ISO 9001; Lead-Free; Overall Dimension 2-1/2 Inch Width x 4 Inch Height