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

Defines dimensions, materials and performance requirements (including test procedures) for Water Pressure Reducing Valves and Combination Pressure Reducing Valves, of nominal size between DN 8 and DN 100, for inlet pressures not in excess of 1.6 MPa (16 bar) and a temperature not in excess of 30 degrees C for cold water application and 80 degrees C for hot water application. Can be mounted in any orientation, unless the manufacturer states otherwise.