Introducing our top-quality Sight Glass for Copeland 4,6D 4,6R series compressors! As a trusted factory, we bring you this essential component designed specifically for Copeland compressors. This sight glass ensures optimal performance and longevity of your compressor by providing a clear view of refrigerant levels and any potential issues. Crafted with precision and high-quality materials, our sight glass guarantees durability and efficient operation. Trust our factory to deliver exceptional products catered to your needs.