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The Single Window Sight Flow Indicator with Impeller from Dwyer is an essential tool for any industrial application requiring liquid visibility. Featuring a rotating impeller and removable tempered glass window for easy maintenance, this indicator ensures smooth flow monitoring and prevents any potential obstructions in pipelines. The Buna-N and fiber seals guarantee reliable sealing in a range of pressures (up to 125 psig) and temperatures (32 to 200F). With its durable bronze body, FNPT connections, and 1 pipe size, this indicator is perfect for both industrial and commercial settings, making it a must-have for any facility's plumbing system.