PREN 1751 : DRAFT 2011

Foreword
1 Scope
2 Normative references
3 Definitions and symbols
4 Instrumentation
5 Leakage tests
6 Flow rate and pressure tests
Annex A (normative) - Mechanical testing of
        dampers and valves
Annex B (informative) - Thermal transmittance
        through dampers and valves
Annex C (normative) - Classification of a damper
        or valve leakage
Annex D (informative) - Effect of Duct Configuration
        on Pressure Loss Coefficient

Describes methods for the testing and rating of dampers and valves used in air distribution systems with pressure differences up to 2000 Pa.