CPV code 42121000 designates Hydraulic or pneumatic power engines and motors in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
42121000 sits under 42120000 (Pumps and compressors) and groups 5 more specific sub-codes. When classifying a tender, choose the narrowest code that still covers the full subject of the contract.