Robinair's No. EMPTY 34102 Refillable 30 Pound Refrigerant Recovery Tank is designed for use with R-134a refrigerant (not included). This tank is a direct replacement for use with Robinair No. 34234, 34300-2K, 34800, 34134A, and 34134-2K Refrigerant Recovery/Recycling/Recharging Stations. Tank features 1/2 inch ACME fittings on dual valves necessary for both recovery and recycling. Tank is shipped with a nitrogen fill to prevent moisture contamination and must be evacuated before use. Note: this tank DOES NOT include actual R-134A refrigerant - it is an empty tank (except for temporary nitrogen fill) designed for recovery use. Robinair, a Bosch Automotive Service Solutions brand, is a global leader in service tools and equipment based in Owatonna, Minnesota. Robinair is recognized throughout the world as the quality and performance leader in AC/R evacuation tools and this position has led to its success with the full range of products that serve the heating/ventilating/air conditioning/refrigeration (HVAC-R) and mobile markets, which includes the automotive aftermarket along with other industries such as agriculture and construction.