NEN EN 817 : 2008

Foreword
0 Introduction
1 Scope
2 Normative references
3 Definition
4 Classification
    4.1 Single control mixing valve
    4.2 Other mixing valves
5 Designation
6 Marking - Identification
    6.1 Marking
    6.2 Identification
7 Materials
    7.1 Chemical and hygienic characteristics
    7.2 Exposed surface condition and quality of coating
8 Dimensional characteristics
    8.1 General remarks concerning the drawing
    8.2 Mechanical mixing valves mounted on horizontal
          surfaces
    8.3 Mechanical mixing valves mounted on vertical
          surfaces
    8.4 Dimensions of water outlets
    8.5 Special cases
9 Leaktightness characteristics
    9.1 General
    9.2 Test methods
    9.3 Leaktightness of the mixing valves upstream of
          obturator; cross flow between hot water and cold
          water
    9.4 Leaktightness of the obturator; cross flow between
          hot water and cold water
    9.5 Leaktightness of the mixing valve downstream
          of the obturator
    9.6 Leaktightness of manual diverters
    9.7 Leaktightness of diverters with automatic
          return
    9.8 Summary of requirements
10 Hydraulic operating characteristics
    10.1 General
    10.2 Test method
    10.3 Apparatus
    10.4 Mounting of the mixing valve
    10.5 Procedure
    10.6 Verification of hydraulic characteristics
11 Mechanical performance under pressure
    11.1 General
    11.2 Apparatus
    11.3 Testing the mechanical performance upstream of
          the obturator - obturator(s) in the closed position
    11.4 Testing the mechanical performance downstream
          of the obturator - obturator(s) in the open position
12 Mechanical endurance characteristics
    12.1 Mechanical endurance of the control device
    12.2 Mechanical endurance of diverters
    12.3 Mechanical endurance of swivel nozzles
13 Torsion resistance characteristics of the control
    13.1 General
    13.2 Test method
14 Acoustic characteristics
    14.1 General
    14.2 Procedure
    14.3 Requirements
15 Protection against pollution of drinking water
Annexes
A (normative) Examples of pressure take-off tees
    A.1 Recommendation for the design of pressure
          take-off tees
B (informative) Acoustic classification (example)
    B.1 Mechanical mixing valve with nozzle
    B.2 Mechanical mixing valve with shower or shower
          head outlet
    B.3 Mechanical mixing valve with nozzle and
          shower or shower head outlet
C (informative) Summary of leaktightness tests

Defines: - the dimensional, leaktightness, pressure resistance, hydraulic performance, mechanical strength, endurance and acoustic characteristics with which mechanical mixing valves need to comply; - test methods to verify the characteristics.