The Copeland 998-0213-00 Unloader Valve is a replacement component designed for capacity control in compatible Copeland semi-hermetic compressors, particularly 6D models. It operates by controlling the compressor’s unloading mechanism, reducing pumping capacity when required to match cooling demand. Used in commercial HVAC systems, refrigeration units, and cooling equipment, this valv... https://www.partshnc.com/998-0213-00-copeland-unloader-valve