Carrier 19C35-6151-G Sight Glass

Carrier 19C35-6151-G Sight Glass is a glass liquid sighting window used to visually monitor liquid levels in Carrier equipment. It is cataloged as a "glass liquid sight" under NSN 6680-00-868-2838 and is associated with Carrier Corporation (CAGE 10855), placing it in the FSC 6680 category for Liquid And Gas Flow Liquid Level And Mechanical Motion Measuring Instruments. The part carries an alternate reference number 19C356151 for cross-reference. As a purpose-built viewing port, it lets technicians verify the presence and level of liquids within a system or reservoir without disassembly, aligning with Carrier's replacement-part listings for the 19C35-6151 series and its role in routine maintenance of Carrier HVAC and related equipment. This item is documented in NSN databases as a glass liquid sight, confirming its function as a sighting device rather than a sensor or valve.