42131146 - Non-return valves

CPV code 42131146 in the EU Common Procurement Vocabulary refers to Non-return valves. It sits at level 6 of the CPV hierarchy as a subcategory within the 42 division. This code is nested directly under 42131100, narrowing the broader category into the specific area of non-return valves. As a leaf code, 42131146 has no further subdivisions and represents the most precise classification available in this branch — buyers should reference it directly in tender notices when the procurement primarily concerns non-return valves. Contracting authorities across the EU use 42131146 in TED notices and national procurement portals to signal that a tender relates to non-return valves.