NBN EN 13828 : 2003

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Designation
5 Design requirements
  5.1 Materials
      5.1.1 Body and ball materials
  5.2 End connections
  5.3 Operation
      5.3.1 Operating devices
  5.4 Stops
  5.5 Ball bore
      5.5.1 Full bore
      5.5.2 Reduced bore
6 Performance requirements
  6.1 Operating torque
  6.2 Stop resistance
  6.3 Leak-tightness
  6.4 Angular seal
7 Test methods
  7.1 Operating torque test
  7.2 Torque and bending test
      7.2.1 General
      7.2.2 Sequence of torsion and bending moments tests for valves
  7.3 Stops and spindle - Mechanical resistance test
  7.4 Hydraulic tests
      7.4.1 Leak-tightness test
      7.4.2 Hydraulic strength
7.5 Acoustic tests and requirements
    7.5.1 Principle
    7.5.2 Test
    7.5.3 Requirements
7.6 Endurance test
    7.6.1 Endurance test
    7.6.2 Test installation
    7.6.3 Test
7.7 Angular seal
8 Marking
Bibliography