Flowserve AAG301-1 Steel Lined Flanged Sight Glass

Flowserve AAG301-1 is a 1-inch nominal bore steel-lined sight glass with an ANSI 150 flanged connection, delivering a durable visual window for direct liquid level observation in process piping and equipment, enabling operators to monitor flow and level without disassembly during regular operation, maintenance windows, or inline inspections. The steel lining provides robust protection against internal wear and corrosion in demanding service environments, helping maintain clear visibility through the sight glass, reducing the risk of misreadings, and supporting reliable, repeatable level indication when mounted to standard ANSI 150 flanged piping. Designed for straightforward installation on systems that use a 1-inch ANSI 150 flange, the AAG301-1 offers secure mounting, precise alignment, and a clear viewing pane that facilitates quick checks and accurate level readings as part of routine process control. Typical use cases involve visual level monitoring in pipelines and vessels where a durable, long-lasting sight glass is preferred for level checks during operation, servicing, or safety-critical monitoring tasks.