This European Standard specifies requirements and test methods for circulation systems and is applicable to equipment used in domestic swimming pools and designed for the circulation of water (introduction and/or extraction). This standard applies for swimming pools as defined in EN 16582-1 and will be read in conjunction with it. This standard does not apply to: — pools for public use covered by EN 15288-1; — spas for domestic or public use; — paddling pools according to EN 71-8; — pre filtration; — natural and nature like pools. NOTE For filtration systems see EN 16713–1 and for treatment systems EN 16713–3.