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About This Item
Full Description
In this edition of NSF/ANSI 50 the following revisions were incorporated:
Issue 57 - CEC pump, energy and sound testing
This revision included an optional evaluation criteria and testing method for the evaluation of pumps for energy efficiency.
Issue 66 - Chemical feeders
This revision updated 5 - Filters to clarify the marking requirements for vacuum service filters to specify the collapse negative pressure in psi or inches of mercury. Sections 5 - Filters, 9 - Mechanical chemical feeding equipment and 10 - Flow-through chemical feeding equipment updated the product data plate to reference a web address and phone number by which users can obtain the installation, operation, and maintenance instructions.
Issue 66 - Equalizer line
This revision resolved the issue of public pool skimmer equalizer lines required as mandatory or optional. It provides the mechanism for continued production, testing, and certification, and the installation of skimmers equipped with equalizers where permitted or required by code and allows skimmers to be installed without equalizer lines to address jurisdictions and codes that prohibit equalizer lines and the additional submerged suction fittings.
Issue 70 - Normative Reference and mechanical chemical feeders
The revision added section within 4 to address special use suction fittings (i.e. the vacuum port fittings); updated the normative references; and 9 was revised to allow for mechanical chemical feeding equipment that operates at a fixed rate if it is controlled by a chemical controller that meets the requirements of 17 and the mechanical chemical feeder has a method of mechanically restricting the maximum output per day.
Issue 73 - Media labeling
This revision added requirements for filtration media labeling.
Issue 76 - Filtration media reorganization
NSF/ANSI 50 - 2011 was editorially reformatted to make the Standard more user friendly. A new section for filtration media was created (Section 11). The requirements in 11 - General requirements for process equipment were added to 12 - Ozone process equipment, 13 - Ultraviolet light process equipment, 14 - In-line electrolytic chlorinator or brominator process equipment, 15 - Brine (batch) type electrolytic chlorine or bromine generators, and 16 - Copper/silver and copper ion generators.
Document History
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NSF/ANSI/CAN 50-2024
Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities- Most Recent
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NSF/ANSI/CAN 50-2023e
Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities- Historical Version
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NSF/ANSI/CAN 50-2023
Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities- Historical Version
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NSF/ANSI/CAN 50-2021
Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities- Historical Version
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NSF/ANSI/CAN 50-2020
Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities- Historical Version
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NSF/ANSI/CAN 50-2019
Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities (NSF/ANSI/CAN 50-2019)- Historical Version
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NSF 50-2017
Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities- Historical Version
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NSF 50-2016a
Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities- Historical Version
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NSF 50-2016
Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities- Historical Version
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NSF 50-2015
Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities- Historical Version
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NSF 50-2014
Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities- Historical Version
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NSF 50-2013
Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities- Historical Version
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NSF 50-2012
Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities- Historical Version
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NSF 50-2011 Addendum
Addendum: Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities- Historical Version
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NSF 50-2011
viewing
Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities- Historical Version
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NSF 50-2010
Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities - Evaluation criteria for materials, components, products, equipment and systems for use at recreational water facilities- Historical Version
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NSF 50-2009a
Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities - Evaluation criteria for materials, components, products, equipment and systems for use at recreational water facilities- Historical Version
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NSF 50-2009
Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities - Evaluation criteria for materials, components, products, equipment and systems for use at recreational water facilities- Historical Version
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NSF 50-2008
Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities - Evaluation criteria for materials, components, products, equipment and systems for use at recreational water facilities- Historical Version
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NSF 50-2007
Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs- Historical Version
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NSF 50-2005 Addendum 1.0
Addendum 1: Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs- Historical Version
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NSF 50-2005
Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs- Historical Version
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NSF 50-2004
Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs- Historical Version
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NSF 50-2001
Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs- Historical Version
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NSF 50-2000
Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs- Historical Version
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NSF 50-1985
Circulation System Components for Swimming Pools, Spas, or Hot Tubs- Historical Version
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NSF 50-1979
Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs - WITHDRAWN - See current edition- Historical Version