NFPA T3.4.7

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Accumulator – Pressure rating supplement to NFPA/T2.6.1 R2-2000, Fluidpower components – Method for verifying the fatigue and establishing theburst pressure ratings of the pressure containing envelope of a metal fluidpower accumulator
Revision R2, March 15, 2000
Includes all amendments and changes through Reaffirmation Notice , 2014

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  • Revision:Revision R2, March 15, 2000
  • Published Date:January 2014
  • Status:Active, Most Current
  • Document Language:English
  • Published By:National Fluid Power Association ((NFPA))
  • Page Count:9
  • ANSI Approved:No
  • DoD Adopted:No
  • This standard provides:

    − test and statistical methods for generating fatiguedistribution data;

    − test and statistical methods for conducting a verification ofthe pressure ratings on fluid power accumulators;

    − common requirements and an industry-wide philosophy in judgingone type of pressure capability for fluid power accumulators;

    − uniform methods of product comparison.

    This standard covers the pressure containing envelope of thefollowing accumulator types:

    − piston;

    − bladder;

    − diaphragm;

    − direct acting;

    − mechanical;

    − mechanical spring;

    − mechanical weighted;

    − metal bellows;

    − gas bottles, are also included, only when they are used as anextension of the gas volume of one of the above mentionedaccumulators.

    This standard limits conditions as follows:

    Follow 1.2 from NFPA/T2.6.1 R2. 

    This standard encourages manufacturers to use this common methodto enhance the credibility of their pressure ratings.