Automatic electrical controls for household and similar use - Part 2-8: Particular requirements for electrically operated water valves, including mechanical requirements
|Publication Date:||1 January 2003|
|ICS Code (Automatic controls for household use):||97.120|
This clause of part 1 is replaced as follows:
This part 2-8 applies to electrically operated water valves for use in, on or in association with equipment for household and similar use that may use electricity, gas, oil, solid fuel, solar thermal energy, etc. or a combination thereof, including heating, air-conditioning and similar applications.
This part 2-8 is also applicable to electrically operated water valves for appliances within the scope of IEC 60335.
This part 2-8 contains requirements for electrical features of water valves and requirements for mechanical features of valves that affect their intended operation.
This part 2-8 applies to the inherent safety, to the operating values, operating sequences where such are associated with equipment protection, and to the testing of automatic electrical controls used in, on or in association with household and similar equipment.
Electrically operated valves for equipment not intended for normal household use but which may nevertheless be used by the public, such as equipment intended to be used by laymen in shops, in light industry and on farms, are within the scope of this part 2-8.
This part 2-8 does not apply to electrically operated water valves designed exclusively for industrial applications.
This part 2-8 does not apply to:
- electrically operated water valves of nominal connection size above DN 50;
- electrically operated water valves for admissible nominal pressure rating above 1,6 MPa;
- food dispensers;
- detergent dispensers;
- steam valves.
Throughout this part 2-8, where it can be used unambiguously, the term:
- "valve" is used to denote an electrically operated water valve (including actuator and valve body assembly);
- "actuator" means "electrically operated mechanism or prime mover";
- "valve body" means "valve body assembly";
- "equipment" includes "appliance" and "control system".
This part 2-8 also applies to actuators and to valve bodies which are designed to be fitted to each other.
This part 2-8 applies to individual valves, valves utilized as part of a system and valves mechanically integral with multi-functional controls having non-electrical outputs.
NOTE Attention is drawn to the fact that, in many countries, additional test requirements and by-laws have been established by the water authorities or companies.