Aerospace series. Hydraulic filter elements. Test methods Verification of collapse/burst pressure rating

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

03-31-2015

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Test circuit and equipment
6 Accuracy of measurements and variations of
  test conditions
7 Test procedure
8 Reporting
9 Acceptance criteria
Annex A (informative) - Test data report form
Annex B (informative) - Examples of abrupt decrease in
        the slope of the differential pressure versus
        contaminant mass added curve and increase
        in particle counts
Bibliography

Explains a method for verifying the collapse/burst pressure rating of an aerospace hydraulic fluid power filter element.

This part of ISO14085 describes a method for verifying the collapse/burst pressure rating of an aerospace hydraulic fluid power filter element. This represents the capability of a filter element to withstand a designated differential pressure in the normal (intended) direction of flow, created by flowing contaminated fluid through the filter element until either collapse/burst occurs or the maximum expected differential pressure is reached without element failure.

The collapse/burst pressure test can be conducted in conjunction with an efficiency test performed according to the procedure defined in the ISO14085-3 by continuing the contaminant injection until the designated filter element differential pressure is reached.

This part of ISO14085 is not intended to qualify a filter element under replicate conditions of service; this can only be done by a specific test protocol developed for the purpose, including actual conditions of use, for example the operating fluid or contamination.

The tests data resulting from application of this part of ISO14085 can be used to compare the performance of aerospace hydraulic filter elements.

Committee	ACE/69
DevelopmentNote	Supersedes 13/30271038 DC. (03/2015)
DocumentType	Standard
Pages	20
PublisherName	British Standards Institution
Status	Current
Supersedes	13/30271038 DC : 0

Standards	Relationship
ISO 14085-4:2015	Identical

ISO 5598:2008	Fluid power systems and components Vocabulary
ISO 11943:1999	Hydraulic fluid power On-line automatic particle-counting systems for liquids Methods of calibration and validation
ISO 14085-3:2015	Aerospace series Hydraulic filter elements Test methods Part 3: Filtration efficiency and retention capacity
ISO 2942:2004	Hydraulic fluid power Filter elements Verification of fabrication integrity and determination of the first bubble point
ISO 1219-1:2012	Fluid power systems and components — Graphical symbols and circuit diagrams — Part 1: Graphical symbols for conventional use and data-processing applications
ISO 12103-1:2016	Road vehicles — Test contaminants for filter evaluation — Part 1: Arizona test dust

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BS ISO 14085-4:2015

Current

Table of Contents

Abstract

Scope

General Product Information

International Equivalents

Standards Referencing This Book

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