Hongsen Model SGN Sight Glass

The Hongsen Model SGN & SGR Sight Glass is designed for reliable visual monitoring in HVAC and refrigeration systems. It allows technicians to inspect refrigerant flow, moisture levels, liquid level, and lubricant oil condition, helping maintain efficient system performance and simplify maintenance. Built with high-quality materials, these sight glasses offer dependable operation across a wide range of refrigeration applications. Features Model SGN Sight Glass is installed on the liquid line of refrigeration and air conditioning systems to monitor refrigerant flow, detect moisture in the refrigerant, and observe lubricant oil flow in the oil return line from the oil separator. Model SGN features a built-in moisture indicator that changes color to show the moisture content in the refrigerant, allowing for quick and accurate system inspection. Model SGR Sight Glass is designed to indicate the refrigerant level in the liquid receiver and the lubricant oil level in the compressor crankcase. Both Model SGN and Model SGR use a modified PTFE sealing design, providing excellent sealing performance and compatibility with various refrigerants and refrigeration oils. Both models are constructed with an explosion-proof press-fit design and high-clarity viewing glass, ensuring safe, durable, and reliable operation.