CPV code 42131000 designates Taps, cocks and valves in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
42131000 sits under 42130000 (Taps, cocks, valves and similar appliances) and groups 4 more specific sub-codes. When classifying a tender, choose the narrowest code that still covers the full subject of the contract.