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1.1 This specification covers requirements for safety vacuum release systems (SVRS) for use on swimming pools, spas, hot tubs, and wading pools.
1.2 This specification is intended to reduce the risk of drowning or entrapment by providing a rapid detection and rapid release of vacuum or preventing a dangerous vacuum altogether when a person becomes entrapped at the suction outlet serving a pumping system.
1.3 The values stated in customary English units are to be regarded as the standard. Any values in parentheses are given for information only.
1.4 The following safety hazards caveat pertains only to the test methods section, Section 5, of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D2466 Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40
D2468 Specification for Acrylonitrile-Butadiene-Styrene (ABS) Plastic Pipe Fittings, Schedule 40
D2855 Practice for Making Solvent-Cemented Joints with Poly(Vinyl Chloride) (PVC) Pipe and Fittings
F402 Practice for Safe Handling of Solvent Cements, Primers, and Cleaners Used for Joining Thermoplastic Pipe and Fittings
ASME StandardANSI/ASMEB1.20.1 Pipe Threads, General Purpose, Inch
Federal DocumentCPSCDocument Guidelines for Addressing Potential Entrapment Hazards Associated with Swimming Pools and Spas
NSF DocumentNSF50 Circulatory System Components and Related Materials for Swimming Pools, Spas, Hot Tubs Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.
UL StandardsUL746A Plastics Testing
ICS Number Code 97.220.10 (Sports facilities)
UNSPSC Code 49241700(Swimming pool and spa equipment and supplies)