(1) Solder Tee - Copper - 7/8" OD - With 1/4" Access Valve & Cap - Approximately 3 1/2" L - Smart Electric USA- HVAC Copper Fitting - 410A Compatible - Add to system line if access valve defective or not available and can also be installed close to the compressor when changing out a compressor in order to close off line set and allow a vacuum to be pulled without having to pull a vacuum on entire system. Part no. SVW-14