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About This Item

 

Full Description

This Standard covers materials, components, products, equipment and systems, related to public and residential recreational water facility operation.

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

  1. NSF/ANSI/CAN 50-2020


    Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities

    • Most Recent
  2. 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
  3. NSF 50-2017


    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

    • Historical Version
  4. NSF 50-2016a


    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

    • Historical Version
  5. NSF 50-2016


    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

    • Historical Version
  6. NSF 50-2015


    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

    • Historical Version
  7. NSF 50-2014


    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

    • Historical Version
  8. NSF 50-2013


    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

    • Historical Version
  9. NSF 50-2012


    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

    • Historical Version
  10. NSF 50-2011 Addendum


    Addendum: Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

    • Historical Version
  11. NSF 50-2011

    👀currently
    viewing


    Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities

    • Historical Version
  12. 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
  13. 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
  14. 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
  15. 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
  16. NSF 50-2007


    Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs

    • Historical Version
  17. NSF 50-2005 Addendum 1.0


    Addendum 1: Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs

    • Historical Version
  18. NSF 50-2005


    Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs

    • Historical Version
  19. NSF 50-2004


    Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs

    • Historical Version
  20. NSF 50-2001


    Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs

    • Historical Version
  21. NSF 50-2000


    Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs

    • Historical Version
  22. NSF 50-1985


    Circulation System Components for Swimming Pools, Spas, or Hot Tubs

    • Historical Version
  23. NSF 50-1979


    Circulation System Components and Related Materials for Swimming Pools, Spas/Hot Tubs - WITHDRAWN - See current edition

    • Historical Version
 

Amendments, rulings, supplements, and errata

  1. NSF 50-2011 Addendum


    Addendum: Equipment for Swimming Pools, Spas, Hot Tubs and other Recreational Water Facilities