Special FM-1050 Rotameter. Aluminum construction with Buna-N seals. Flow tube is 0.2-2 SLPM-AirValve Options• Utility valve on inletDesign Features• Precision tapered, fluted metering tube• Low pressure drop for increased flow rates at low feed pressuresMaterials of Construction• Wetted End Blocks, Fittings and Internal Parts: Aluminum• Seal Materials: Buna-N• Metering Tube: Borosilicate glass• Float Materials: Glass and Tantalum• Scale: Ceramic ink on glass tubeSpecifications• Pressure Rating: 250 psig maximum• Temperature Rating: 250°F maximum• Accuracy: ±5% of full scale flow rate• Repeatability: 0.25% of scale reading• Inlet: 1/8" FNPT• Outlet: 3/16"-3/8" tapered hose barb• Scale: 0.2-2 SLPM-Air