ISO/TC 144/SC 2 - Aerodynamic testing and rating of high velocity/ pressure assemblies, low velocity/pressure assembli

Specifies methods for the aerodynamic testing and rating of dampers and valves used in air distribution systems with pressures up to 2 000 Pa. Applies to the following tests: a) testing for damper and valve leakage; b) testing of casing leakage; c) testing of flow rate/pressure requirements for dampers or valves mounted in a duct system.

Specifies methods for the aerodynamic testing and rating of assemblies suitable for use with air distribution systems operating at high or low velocity and high or low pressure. The tests cover: a) leakage past a closed valve; b) casing leakage; c) characteristics of the constant or variable flow rate controller; d) degree of temperature mixing achieved by a dual duct box; e) flow rate characteristics for single duct units.