Sight glasses, also known as sight windows or view glasses, are transparent observation devices installed in piping systems, tanks or equipment. They allow real-time visual inspection of fluid flow, level, color, clarity and process conditions without disassembling the system, ensuring safe and efficient operation.
Composed of a transparent glass lens, valve body, gasket and fasteners, sight glasses have a simple, compact structure. The high-transparency glass (borosilicate or tempered glass) ensures clear observation, while the gasket provides reliable sealing to prevent fluid leakage.
Non-intrusive design avoids interfering with system operation; high temperature and pressure resistance adapts to various harsh working environments. Some models are equipped with wiper devices to keep the lens clean for continuous observation.
Installed directly in pipelines, suitable for observing fluid flow and state in continuous pipeline systems, widely used in chemical, pharmaceutical and food industries.
Mounted on tanks or vessels to monitor liquid level, with clear level scales for accurate observation, applicable to water treatment, oil storage and beverage production.
Widely used in chemical processing, pharmaceutical, food and beverage, water treatment, oil & gas and power generation industries, for observing fluids such as water, oil, chemicals, beverages and steam.
