Dwyer Instruments SFI-100-2 2-Inch NPT Bronze Single Window Sight Flow Indicator with Rotating Impeller

The Dwyer Instruments Series SFI-100-2 is a 2-inch NPT single-window sight flow indicator engineered to provide reliable visual monitoring of flow in compatible gases and liquids within pipelines. Featuring a durable bronze body and a rotating ABS impeller, this indicator delivers immediate confirmation of flow presence and direction at a glance, helping protect downstream equipment and processes.

Part of Dwyer's trusted Midwest Series SFI-100 line, this unit is manufactured of quality materials and safety-tested for long, dependable service. The tempered glass viewing window offers clear visibility, while the rotating impeller provides positive visual indication whenever flow is present.

Key Features:

• Single tempered glass window for clear, unobstructed flow viewing
• Rotating ABS impeller provides positive visual indication of flow
• Bronze body construction for durability and corrosion resistance
• 2-inch female NPT threaded connections for straightforward inline installation
• Removable window allows easy servicing and replacement of wearing parts without removing the unit from the line
• Maximum operating temperature: 200°F (93°C)
• Maximum operating pressure: 125 psig (8.62 bar); 150 psig (10.34 bar) on MP models
• Buna-N gasket standard (fluoroelastomer and PTFE options available)
• Compatible with gases and liquids
• Supports horizontal or vertical mounting orientations

With dimensions of 5.688" L x 3.250" D x 3.625" H and a weight of 5.5 lbs, the SFI-100-2 is a robust, industrial-grade solution for process monitoring in HVAC, chemical, water treatment, and industrial fluid system applications. Cross-reference: Grainger 21XL66.