ISO 14085-1-2015 PDF

Full title and description

ISO 14085-1:2015 — Aerospace series — Hydraulic filter elements — Test methods — Part 1: Test sequence. This part of ISO 14085 specifies a standardized test sequence for evaluating the characteristics of hydraulic fluid filter elements used in aerospace applications under defined laboratory conditions; it is intended to provide comparative performance data rather than to qualify an element for specific in-service conditions.

Abstract

ISO 14085-1:2015 defines the order and general nature of tests to be applied when assessing hydraulic filter elements for aerospace use. The document clarifies that the sequence is for evaluation under standard conditions and is not a substitute for bespoke qualification tests that reproduce in-service fluids and contamination. Test results obtained using this part can be used to compare performance between filter elements.

General information

• Status: Published (confirmed current following systematic review).
• Publication date: March 2015 (2015-03).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 49.080 (Aerospace fluid systems and components).
• Edition / version: Edition 1 (2015).
• Number of pages: 6.

Key bibliographic and lifecycle details above are taken from the ISO catalogue entry for ISO 14085-1:2015 (standard published in March 2015 and reviewed/confirmed as current in a subsequent ISO review).

Scope

This part of ISO 14085 specifies a test sequence to be applied when evaluating characteristics of aerospace hydraulic fluid filter elements under standardized laboratory conditions. It applies to the generation of comparative performance data (for example: efficiency, retention capacity, pressure behavior and response to conditioning cycles) and is not intended to be used alone as a qualification protocol that replicates actual service conditions (such as specific operating fluids or contamination types).

Key topics and requirements

• Definition of a standardized test sequence for laboratory evaluation of hydraulic filter elements.
• Requirement that the sequence is for comparative evaluation and not for qualification under in-service conditions.
• Interaction with companion parts of the ISO 14085 series that specify conditioning, filtration efficiency/retention, collapse/burst testing and flow-fatigue/resilience tests.
• Provision for measuring initial cleanliness level as part of the series of test methods.
• Use of test data to compare performance across filter designs and manufacturers.

The list above summarises the primary test-focus and obligations defined by Part 1 and its relationship to the other parts of the ISO 14085 series.

Typical use and users

Typical users include aerospace component manufacturers, filter element designers, independent test laboratories, procurement and qualification engineers within the aerospace industry, and organizations responsible for specifying or verifying hydraulic system components. The standard is used when a uniform laboratory evaluation sequence is required for comparative assessment of hydraulic filter elements.

Related standards

ISO 14085-1 is Part 1 of the ISO 14085 series of test-method standards for aerospace hydraulic filter elements. Companion parts include: Part 2 (conditioning), Part 3 (filtration efficiency and retention capacity), Part 4 (verification of collapse/burst pressure rating), Part 5 (resistance to flow fatigue) and Part 6 (initial cleanliness level). Note: some parts of the series have separate publications or subsequent updates (for example, Part 3 was revised in 2024). Users should consult the ISO catalogue or their national standards body for the current status of each part.

Keywords

aerospace; hydraulic filter elements; test methods; test sequence; filtration efficiency; retention capacity; collapse/burst pressure; flow fatigue; initial cleanliness; conditioning; ISO 14085.

FAQ

Q: What is this standard?

A: ISO 14085-1:2015 is Part 1 of a multi-part ISO standard that specifies a standardized test sequence for laboratory evaluation of hydraulic filter elements used in aerospace systems.

Q: What does it cover?

A: It covers the order and general nature of tests to be applied to hydraulic filter elements for comparative assessment under defined laboratory conditions; it explicitly states it is not intended as a full in-service qualification protocol (which requires tests reflecting specific operating fluids and contamination).

Q: Who typically uses it?

A: Aerospace filter manufacturers, design and test engineers, independent test laboratories and procurement/quality teams use the standard when they need consistent, comparable laboratory test sequences for hydraulic filter elements.

Q: Is it current or superseded?

A: ISO 14085-1:2015 was published in March 2015 and was reviewed/confirmed by ISO in a subsequent systematic review (confirmed current in ISO records). The ISO catalogue indicates the standard remains published and under the normal ISO review lifecycle; users should check the ISO catalogue or their national standards body for any later amendments or withdrawal notices.

Q: Is it part of a series?

A: Yes. ISO 14085 is a multi-part series. Part 1 defines the test sequence and is complemented by Parts 2 through 6 which specify conditioning, filtration efficiency and retention capacity, collapse/burst verification, resistance to flow fatigue and initial cleanliness level, respectively. Some parts have seen separate updates; confirm the status of each part when applying them.

Q: What are the key keywords?

A: Aerospace, hydraulic filter elements, test methods, test sequence, filtration efficiency, retention capacity, collapse pressure, burst pressure, flow fatigue, initial cleanliness, conditioning.