This International Standard specifies methods for the aerodynamic testing and rating of dampers and valves used in air distribution systems with pressures up to 2 000 Pa. (See clause 4.)
The tests incorporated in this International Standard are :
a) leakage past a closed damper or valve;
b) casing leakage;
c) flow rate/pressure requirement characteristics.
The acoustic testing of dampers and valves is not included in this International Standard.