This 123LB Refrigerant Recovery Cylinder is built to industry standards, manufactured in ISO 9001-certified facilities, and compliant with DOT-4BA-400 specifications and AHRI guidelines. It is DOT and TC certified for safe and reliable use. Designed for HVAC applications to recover, store, and transport refrigerants. Constructed from high-grade welded steel and finished with a corrosion-resistant powder coating, this refillable tank offers heavy-duty durability. Each unit is X-rayed and hydrostatically tested, pre-purged, and vacuum-ready for refrigerant filling. Designed with two high-quality valves for easy access to liquid and vapor. Each valve features a 1.03"-14 NGO connection for secure, leak-free performance. The pressure relief valve ensures safe venting in case of overpressure, helping to prevent tank rupture or uncontrolled gas release. Also available in 30LB, 50LB and 239LB sizes - Models YSN301R, YSN501R, YSNR239 Size: large.