Over deze norm
In part 3, this standard specifies the fitness for purpose and certification requirements for check valves used for water supply. The nominal pressures of valves covered by this standard are PN6-PN10-PN16-PN 25. The nominal diameter of the valves covered by this standard are specified in Part 1 or the corresponding product standard. General specifications for the suitability of valves used in water supply are set out in Part 1 of this standard. The design criteria for the valves covered by this standard are specified in the product standards. The certification tests only apply to valves of DN≥ 500, except by special arrangement between the manufacturer and the user. The non-return valves conforming to this standard shall be sized to permit a maximum flow rate of 3 m/s.
|Nederlandse titel||Afsluiters voor watervoorziening - Eisen aan de geschiktheid en de beproeving ervan - Deel 3: Terugslagkleppen|
|Engelse titel||Valves for water supply - Specifications for use and appropriate verification tests - Part 3: Check valves|