ISO 7241-2-2000 PDF

Full title and description

Hydraulic fluid power — Quick-action couplings — Part 2: Test methods (ISO 7241-2:2000). This part of ISO 7241 specifies the test procedures and required test apparatus for evaluating the performance of hydraulic quick-action (quick-release) coupling halves and assemblies (leakage, connect/disconnect forces, pressure-drop, endurance, temperature and vacuum behaviour, etc.).

Abstract

ISO 7241-2:2000 defines standardized methods to test quick-action hydraulic couplings so that manufacturers, test laboratories and users can produce comparable, repeatable performance data. Tests cover low- and high-pressure leakage (coupled and uncoupled), connect/disconnect force, pressure-drop (flow/pressure characteristics), vacuum and extreme-temperature behaviour, endurance/cycle testing and related measurement/reporting requirements.

General information

• Status: Withdrawn (superseded).
• Publication date: 23 March 2000.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: Fluid power systems and components — ICS 23.100.01 (general fluid power) and related hydraulic component categories.
• Edition / version: Second edition (2000), replacing ISO 7241-2:1986.
• Number of pages: 22 pages.

Scope

Specifies test apparatus, test conditions, sample selection and detailed step-by-step procedures for evaluating quick-action hydraulic couplings. Included are methods for: low-pressure coupled and uncoupled leakage, maximum-service-pressure uncoupled leakage (valved halves), connect/disconnect force measurement, pressure-drop (flow) testing across a range of flow rates, vacuum testing, extreme-temperature exposure, endurance/cycling tests and the format and content of test reports. The tests are intended to be used in conjunction with the relevant dimensional/performance coupling standards that identify which tests apply.

Key topics and requirements

• Test apparatus and calibration — specified fixtures, measurement taps and instrumentation accuracy.
• Test conditions — ambient temperatures, test fluid (ISO VG 32) and viscosity control requirements.
• Leakage tests — low-pressure (coupled/uncoupled) and maximum-service-pressure leakage procedures and reporting.
• Connect/disconnect force tests — methods to measure linear force and/or torque required to couple halves under specified loads.
• Pressure-drop (flow) tests — selection of flow points (25 % to 150 % of rated flow), measurement method and calculation of net coupling pressure drop.
• Vacuum, extreme-temperature and endurance (cycle) tests — sequences, acceptance/observation criteria and failure reporting.
• Test sample selection and reporting — representative samples, minimum numbers and required data in test reports.

Typical use and users

Used by hydraulic component manufacturers, product development and QA laboratories, OEMs, procurement/specification engineers and conformity/test houses to qualify and compare quick-action coupling performance and to demonstrate compliance with connector-specific requirements. Test results support design validation, supplier evaluation and acceptance testing.

Related standards

ISO 7241-2:2000 formed part of the ISO 7241 series (dimensions and performance for quick-action couplings) and is referenced by and related to other connector and test standards such as ISO 7241-1 (dimensions/requirements), ISO 5675 (agricultural quick couplers), ISO 4411 (pressure-differential/flow measurement), ISO 4397 (hose/nominal sizes) and the later consolidated test-method standard ISO 18869:2017 which supersedes ISO 7241-2:2000.

Keywords

quick-action coupling, quick-release coupling, hydraulic coupling, test methods, leakage test, pressure-drop test, connect force, endurance test, ISO 7241-2, hydraulic fluid power.

FAQ

Q: What is this standard?

A: ISO 7241-2:2000 is the part of the ISO 7241 family that defined standardized test methods for quick-action hydraulic couplings (test apparatus, test procedures and reporting).

Q: What does it cover?

A: It covers specific laboratory test procedures — low- and high-pressure leakage (coupled/uncoupled), connect/disconnect forces, pressure-drop/flow testing, vacuum and extreme-temperature tests, endurance (cycle) testing, sample selection and required reporting details.

Q: Who typically uses it?

A: Manufacturers of hydraulic couplings, OEMs, independent test laboratories, conformity assessment bodies and specification or procurement engineers use these methods to verify performance and produce comparable test data.

Q: Is it current or superseded?

A: ISO 7241-2:2000 has been withdrawn and superseded. The ISO 7241-2:2000 text was withdrawn (withdrawal recorded in March 2019) and its test-method content has been superseded by ISO 18869:2017 (Hydraulic fluid power — Test methods for couplings actuated with or without tools). Users should refer to ISO 18869:2017 (and any later revisions) for the current, consolidated test methods.

Q: Is it part of a series?

A: Yes — it belonged to the ISO 7241 series (hydraulic fluid power — quick-action couplings). The series includes parts that specify dimensions and performance; separate parts and later standards provide the applicable test and dimensional requirements for particular coupling types.

Q: What are the key keywords?

A: Quick-action coupling, quick-release coupling, hydraulic coupling, test methods, leakage, pressure drop, connect force, endurance, ISO 7241-2.