Building valves. Manually operated copper alloy and stainless steel ball valves for potable water supply in buildings. Tests and requirements
Building valves. Manually operated copper alloy and stainless steel ball valves for potable water supply in buildings. Tests and requirements
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1 Scope This European standard applies primarily to copper alloy ball valves , dimensions DN 8 to DN 100, for potable water supply in buildings up to PN 10 and a distribution temperature of 65 °C. Occasional excursions up to 90 °C are permitted for a period of 1 h maximum. This standard applies also to ball valves in combination with other components in the same body. This standard specifies:
— the requirements of the materials and the design of ball valves ;
— the mechanical, hydraulic and acoustic requirements of ball valves ;
— the test methods to verify the requirements of ball valves ;
— the marking requirements of ball valves .
Ball valves in combination with other valves should fulfil the same requirements.
Другие стандарты BS