This 239LB 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 use to recover, store, and transport A2L refrigerants, which are mildly flammable and used in a wide variety of refrigeration and air conditioning applications. Equipped with reverse (left-hand) threads and a built-in pressure relief valve, both of which are critical safety features. 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. 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-A2L, YSN501R-A2L, YSNR123-A2L-YE.