NFPA (Fluid) T3.4.7 R2-2000 (R2009)


Accumulator Pressure rating supplement to NFPA/T2.6.1 R2-2000, Fluid power components Method for verifying the fatigue and establishing the burst pressure ratings of the pressure containing envelope of a metal fluid power accumulatorNational Fluid Power Association / 15-Mar-2000 / 10 pages

1.1 This standard provides:
- test and statistical methods for generating fatigue distribution data;
- test and statistical methods for conducting a verification of the pressure ratings on fluid power accumulators;
- common requirements and an industry-wide philosophy in judging one type of pressure capability for fluid power accumulators;
- uniform methods of product comparison.
1.2 This standard covers the pressure containing envelope of the following 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 an extension of the gas volume of one of the above mentioned accumulators.
1.3 This standard limits conditions as follows:
Follow 1.2 from NFPA/T2.6.1 R2.
1.4 This standard encourages manufacturers to use this common method to enhance the credibility of their pressure ratings.

Keywords: accumulator hydraulic fluid power fluid power pressure cyclic test pressure rated fatigue pressure rated burst pressure burst test pressure rating by similarity pressure rating by test pressure rating

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