1 Scope
[A11_start]This European Standard specifies requirements for appliances for household and similar purposes to prevent the backflow
of non-potable water into the water mains. It also specifies requirements for hose sets used for connecting such appliances to the water mains that supply water at a pressure not
exceeding 1 MPa.
NOTE 1 Examples of similar purposes are the installation of appliances in canteens, restaurants, launderettes and communal flats.
NOTE 2 The connection of the appliance to the water mains may be temporary or permanent.
NOTE 3 When reference is made to the water mains, water supplied from a cistern or similar system is also included.
This standard does not apply to
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a) appliances used for dry cleaning;
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b) appliances for medical purposes;
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c) appliances intended for industrial purposes;
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d) water heaters that are an integral part of the water supply system;
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e) water coolers that are an integral part of the water supply system;
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f) backflow prevention devices for general purposes.[A11_end]