NEN EN 215 : 2004 AMD 1 2006

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Requirements
  5.1 Dimensions
  5.2 Mechanical properties
  5.3 Operating characteristics
  5.4 Endurance and temperature resistance
6 Test apparatus and methods
  6.1 Test apparatus
  6.2 Characteristic curves of thermostatic valves
  6.3 Testing of mechanical properties
  6.4 Testing of operating characteristics
  6.5 Test schedule
7 Technical information to be published in the
  manufacturer's instruction for installation and operation
Annex A (normative) Thermostatic Radiator Valves Dimensions
        and details on connection
Annex B (informative) Degree of turbulence of the air current
        in a room
Bibliography

Specifies definitions, requirements and test methods for thermostatic radiator valves. Applies to two port thermostatic valves with or without pre-setting facility for fitting to radiators in wet central heating installations up to a water temperature of 120 degrees C and a nominal pressure of PN 10.