Norme Uni 9182 Pdf
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What is Norme Uni 9182 Pdf and why is it important for water supply and distribution installations
Norme Uni 9182 Pdf is a standard issued by the Italian National Standardization Body (UNI) that specifies the design, installation and testing requirements for hot and cold water supply and distribution installations inside buildings. The standard covers aspects such as materials, components, dimensions, performance, safety, protection against pollution, maintenance and documentation of water installations. The standard also provides guidance for the selection of appropriate devices to prevent pollution by backflow, such as valves, filters and chemical dosing systems.
The standard is important for ensuring the quality, efficiency and reliability of water supply and distribution installations, as well as the protection of human health and the environment from potential hazards caused by contaminated water. The standard also aims to harmonize the technical criteria and methods for water installations with other relevant European standards, such as EN 806, EN 1717 and EN 12541.
The standard is applicable to new and existing water installations for domestic, commercial, industrial and public purposes, as well as for fire-fighting purposes. The standard does not apply to water installations for irrigation, drainage, heating or cooling systems.
The latest version of the standard is UNI 9182:2014, which replaces the previous version UNI 9182:2010. The standard can be purchased online from the UNI Store website[^1^] or from other authorized distributors[^2^]. A free preview of the standard can be downloaded from Scribd[^3^].
Components of water supply and distribution installations
Water supply and distribution installations consist of various components that work together to deliver water from the source to the point of use. Some of the main components are:
Pipelines: Pipelines are pipes that transport water within a distribution system. They are classified into different types according to their function and size. Primary feeders are large-diameter pipelines that connect water treatment plants and service areas. Secondary feeders are smaller-diameter pipelines that branch off from primary feeders and distribute water to different zones within a service area. Distribution mains are pipelines that run along streets and deliver water to service laterals. Service laterals are pipelines that connect distribution mains to individual customers or buildings.
Storage facilities: Storage facilities are tanks or reservoirs that store water for various purposes, such as maintaining pressure, balancing demand, providing emergency supply, and improving water quality. Storage facilities can be classified into different types according to their location and shape. Ground-level storage tanks are located at or near the ground surface and have a cylindrical shape. Elevated storage tanks are located above the ground surface and have a spherical or spheroidal shape. Standpipes are tall cylindrical tanks that act as both storage and pressure vessels.
Pumps: Pumps are devices that increase the pressure or lift of water in a distribution system. They are used to overcome elevation differences, friction losses, or pressure requirements. Pumps can be classified into different types according to their design and operation. Centrifugal pumps are the most common type of pumps used in water distribution systems. They consist of a rotating impeller that imparts kinetic energy to the water, which is then converted into pressure energy by a volute or diffuser. Positive displacement pumps are pumps that move a fixed volume of water per cycle by means of a piston, diaphragm, or gear.
Appurtenances: Appurtenances are accessories that perform various functions in a distribution system, such as controlling flow, isolating sections, measuring flow or pressure, preventing backflow, draining air, or providing access. Some examples of appurtenances are valves, fire hydrants, meters, backflow preventers, air valves, and blowoffs. 061ffe29dd