EN 14124:2004

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
5 Design and manufacture
   5.1 Composition of the inlet valve
   5.2 Connection to the supply network
   5.3 Adjustment of the water level
   5.4 Dimensions of the threaded end connections
6 Mechanical and hydraulic characteristics
   6.1 Threaded end connections
       6.1.1 General
       6.1.2 Tensile strength
       6.1.3 Resistance to tightening torque
   6.2 Backflow prevention
       6.2.1 General
       6.2.2 Dimension of the air inlet
       6.2.3 Efficiency of the air inlet
   6.3 Leaktightness
       6.3.1 Leaktightness under static pressure
       6.3.2 Leaktightness under dynamic pressure
   6.4 Flow rate and filling time
   6.5 Reopening of the inlet valve
   6.6 Water hammer
   6.7 Resistance to pressure
   6.8 Endurance
7 Tests
   7.1 General
   7.2 End connections
       7.2.1 Tensile test and torque test apparatus
       7.2.2 Tensile test operating method
       7.2.3 Torque test operating method
   7.3 Backflow prevention
       7.3.1 Test apparatus
       7.3.2 Operating method
   7.4 Leaktightness
       7.4.1 Test apparatus
       7.4.2 Static pressure test method
       7.4.3 Dynamic pressure test method
   7.5 Inlet flow rate
       7.5.1 Test apparatus
       7.5.2 Test method
   7.6 Reopening of the inlet valve
       7.6.1 Test apparatus
       7.6.2 Test method
   7.7 Water hammer
       7.7.1 Test apparatus
       7.7.2 Test method
   7.8 Resistance to pressure
       7.8.1 Test apparatus
       7.8.2 Test method
   7.9 Endurance
       7.9.1 Test apparatus
       7.9.2 Test method
8 Acoustic characteristics
9 Marking
10 Designation
Annex A (informative) Test method used to verify
        the acoustic characteristics

The purpose of this document is to specify:

- the dimensional, hygiene, tightness, pressure performance, hydraulic, acoustic, mechanical and physico chemical characteristics which inlet valves for flushing cisterns shall comply with;

- the test methods for testing these characteristics;

- marking and presentation.

This document applies exclusively to the valve itself and it does not prejudge compliance with health regulations as the inlet valve is being fitted into the cistern.

This document does not cover valves intended to equip flushing cisterns with external overflow.

This document applies to valves such as float valves limit operating at pressures up to NP 10 (whose operating range is from 0,05 MPa to 1 MPa - 0,5 bar to 10 bar) designed to supply cold water to flushing cisterns for use with WC pans, that are permanently connected to a potable water supply system.

The working range can be extended downwards (< 0,05 MPa - 0,5 bar) down to 0,01 MPa (0,1 bar), in which case the manufacturer's instructions shall indicate this possibility as well as the recommended working range.