NEN EN 1267 : 2012

      Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Test installation
      4.1 General
      4.2 Test tubes
      4.3 Measuring equipments
      4.4 Test fluid
5 Test procedure
      5.1 Test conditions
      5.2 Pressure loss in test tubes
      5.3 Test of valve
6 Calculation
      6.1 Determination of the valve pressure loss
      6.2 Calculation of coefficients
      6.3 Uncertainties
7 Test report
      7.1 Valve data
      7.2 Test data
      7.3 Test result
Annex A (informative) Suitable dimensions for new test tubes
Annex B (informative) Nature of a flow and physical phenomena
                      occurring when a flow passes through a
                      valve
Annex C (informative) Test result uncertainties

Defines a method for determining valve pressure loss coefficient and fluid flow coefficient using water as test fluid.