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FMAPPROVAL 1364

2013 Edition, February 1, 2013

Complete Document

Expansion Chambers



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Product Details:

  • Revision: 2013 Edition, February 1, 2013
  • Published Date: February 2013
  • Status: Active, Most Current
  • Document Language: English
  • Published By: FM Approvals LLC (FM)
  • Page Count: 22
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This standard applies to any component intended for use in sprinkler system piping to reduce pressure changes from temperature cycling in sprinkler systems, or to account for thermal expansion or pressure changes in antifreeze systems. These expansion chambers are referred to as thermal expansion chambers.

The standard applies to any component (with the exception of anti-waterhammer check valves) intended for use in sprinkler system piping to reduce pressure surges from fire pump start-ups. These expansion chambers are sometimes referred to as surge suppressors or surge arrestors.

Purpose

This standard states Approval requirements for expansion chambers for use in wet pipe sprinkler systems that utilize water or antifreeze solutions.

Approval criteria may include, but are not limited to, performance requirements, marking requirements, examination of manufacturing facility(ies), audit of quality assurance procedures, and a follow-up program.