NEN EN 1567 : 1999

Foreword
Introduction
1 Scope
2 Normative references
3 Definitions
      3.1 Water pressure reducing valve
      3.2 Combination water pressure reducing valve
4 Classification of the water pressure reducing valves
      and combination water pressure reducing valves and
      combination water pressure reducing valves
      4.1 Valve form
      4.2 Nominal diameter (DN)
      4.3 End connections
      4.4 Adjustment
      4.5 Temperature range
5 Designation
6 Materials
      6.1 Chemical and hygienic behaviour of material
      6.2 Nature of materials
7 General design requirements
      7.1 Adjustable pressure reducing valve
      7.2 Non-adjustable pressure reducing valve
      7.3 Removal requirements
      7.4 Pressure test point
      7.5 Strainer
8 Requirements and tests
      8.1 General
      8.2 Mechanical requirements and tests
      8.3 Hydraulic tests and requirements
      8.4 Acoustic requirements
9 Marking and technical documents
      9.1 Marking
      9.2 Technical documents

Specifies dimensions, materials and performance requirements (including methods of test) for Water Pressure Reducing Valves and Combination Pressure Reducing Valves, of nominal size from DN 8 to DN 100, for inlet pressures that do not exceed 1,6 MPa (16 bar) and a temperature that does not exceed 30 °C for cold water application and 80 °C for hot water application.