Clear, reliable level viewing for homebrew kettles, kegs and small tanks. This sight glass assembly (Model A) pairs a durable quartz viewing tube with temperature, foodgrade silicone washers and a 1/2' NPT adapter so you can monitor liquid levels safely and accurately during brewing, transfer, or conditioning. Key benefits Instant visual control: See liquid level at a glance to avoid overfills, detect foaming or boilovers, and confirm transfers without opening the vessel. Foodsafe and heatresistant components: Quartz tube plus temp foodgrade silicone washers are chosen for compatibility with brewing, cooking and beverage applications. Fits standard plumbing: Includes a 1/2' NPT adapter compatible with common homebrew fittings for straightforward integration. Key attributes Length options: Available in 11', 16', and 20' lengths to match different kettle and keg heights. Tube material: Quartz viewing tube for clear visibility and chemical stability. Sealing: temperature, foodgrade silicone washers included for sanitary, heatresistant seals. Adapter: Supplied 1/2' NPT adapter for compatibility with standard 1/2' NPT threaded ports. Model: A How it solves problems Eliminates guesswork: Monitor liquid level without opening the vessel and disturbing temperature or sanitation. Reduces contamination risk: A sealed sight gauge means fewer lid or port openings and lower contamination potential. Adapts to your setup: Multiple length options and a standard NPT adapter make it easy to fit into existing kettles, kegs, or tanks. Typical applications Homebrew kettles: Mount as a sight gauge to watch wort levels during heating and transfers. Keg or fermenter monitoring: Use on kegs or small tanks to confirm liquid level during conditioning or serving. Small food or beverage vessels: Install where a reliable, foodsafe visual indicator is required for hot liquids. Installation and compatibility notes Designed for use with standard 1/2' NPT threaded ports; verify your vessel's thread type before ordering. Select the sight glass length (11', 16', or 20') that matches the viewing height you need. The assembly includes the quartz tube, silicone washers, and the 1/2' NPT adapter (Model A). Follow standard sanitary installation and cleaning procedures for brewing and foodgrade equipment. What's included Quartz sight tube (choose 11', 16', or 20') temperature foodgrade silicone washers 1/2' NPT adapter Model designation: A Choose this sight glass assembly when you need a clear, foodsafe, and heatresistant level indicator that integrates with standard 1/2' NPT fittings for homebrewing and small beverage or food vessels.