BS EN 817:2008

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and designation
   3.1 Terms and definitions
   3.2 Designation
4 Marking and identification
   4.1 Marking
   4.2 Identification
5 Materials
   5.1 Chemical and hygiene requirements
   5.2 Exposed surface conditions
6 Dimensional characteristics
   6.1 General remarks
   6.2 Inlet dimensions
   6.3 Outlet dimensions
   6.4 Mounting dimensions
   6.5 Special cases
   6.6 Flexible hoses for shower outlets
   6.7 Shower outlets
7 Sequence of testing
8 Leaktightness characteristics
   8.1 General
   8.2 Test methods
   8.3 Leaktightness of the obturator and of the mixing valve
        upstream of the obturators with the obturator in the
        closed position
   8.4 Leaktightness of the mixing valve downstream of the
        obturator with the obturator open
   8.5 Leaktightness of manually operated diverter
   8.6 Leaktightness and operation of diverter with automatic return
   8.7 Leaktightness of the obturator: cross flow between hot water
        and cold water
9 Pressure resistance characteristics - mechanical performance
   under pressure
   9.1 General
   9.2 Principle
   9.3 Apparatus
   9.4 Mechanical behaviour upstream of the obturator - obturator
        in the closed position
   9.5 Mechanical behaviour downstream of the obturator - obturator
        in the open position
10 Hydraulic characteristics
   10.1 General
   10.2 Initial settings
   10.3 Principle
   10.4 Apparatus
   10.5 Procedure
   10.6 Determination of flow rate
   10.7 Determination of sensitivity
11 Mechanical strength characteristics - torsion test
   for operating mechanism
   11.1 General
   11.2 Test method
12 Mechanical endurance characteristics
   12.1 Mechanical endurance of the control device
   12.2 Mechanical endurance of diverters
   12.3 Mechanical endurance of swivel spouts
13 Backflow protection
14 Acoustic characteristics
   14.1 General
   14.2 Procedure
   14.3 Requirements
Annex A (informative) - Apparatus
Annex B (informative) - Pressure take-off tee
Bibliography

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