This standard is the official version in Italian of the European standard EN 1751 (August 2013 edition).This European Standard specifies methods for the testing and rating of dampers and valves used in air
distribution systems with pressure differences up to 2 000 Pa.
The tests incorporated in this European Standard are:
a) leakage past a closed damper or valve;
b) casing leakage;
c) flow rate/pressure requirement characteristics;
d) torque;
e) thermal transmittance.
The acoustic testing of dampers and valves is not included in this European Standard.
The tests specified above apply to the following:
f) measurement of leakage past a closed damper or valve;
g) measurement of casing leakage;
h) determination of flow rate and pressure requirements;
i) measurement of torque characteristics;
j) measurement of thermal transfer characteristics to determine insulation properties.