NBN EN ISO 3822-3 : 1997 AMD 1 2010

Foreword
0 Introduction
1 Scope
2 Normative references
3 Mounting
    3.1 General
    3.2 Fitting to the test pipe
    3.3 Mounting of in-line valves and appliances with
          screwed connections
    3.4 Mounting of in-line valves and appliances with
          provision for soldering in copper connecting pipes
    3.5 Mounting of in-line valves and appliances fitted
          with copper connecting pipes
    3.6 Mounting of in-line valves or appliances with
          two inlets
    3.7 Discharge connection
4 Test procedure
    4.1 General test conditions
    4.2 Procedure for stop valves
    4.3 Procedure for control valves
    4.4 Procedure for valves and appliances operated by
          water flow
    4.5 Procedure for automatic in-line valves or
          appliances operated by water pressure
    4.6 Procedure for automatic in-line valves and
          appliances operated by water temperature
    4.7 Procedure for "safety groups"
5 Test report
Annex A (informative) Example of low noise flow resistance

Defines mounting and operating conditions for use for in-line valves and appliances for controlling of the flow, pressure or temperature of the water in water supply installations when measurement of of noise emission resulting from water flow is taken. Applies to in-line valves and appliances of maximum nominal size DN 32 and to systems where the maximum water flow rate is not in excess of 2 l/s. The procedures are for general use for all types of in-line valves of conventional design.