GB/T 46719.4-2025 Active National standards

GB/T 46719.4-2025 Aerospace—Hydraulic filter elements test methods—Part 4:Verification of collapse/burst pressure rating

Publish Date: 2025-12-02 Implement Date: 2026-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 46719.4-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Aircraft and spacecraft components

ICS Name: Fluid systems and components for aerospace applications

Publish Date: 2025-12-02

Implement Date: 2026-07-01

Pages: 16 pages

Scope

This document describes the verification method for the crush/rupture pressure rating of aerospace hydraulic filter elements. By injecting contaminants to continuously increase the filter element's differential pressure until crush/rupture occurs or the maximum expected differential pressure is reached without failure, we can determine the filter element's ability to withstand a specified differential pressure under normal flow conditions (specified flow direction). The crush/rupture pressure test can be conducted in conjunction with the filtration efficiency test procedure defined in ISO 14085-3:2015 by continuously injecting contaminants until the specified filter element differential pressure is reached. This document is not applicable to qualification verification of filter elements under specific operating conditions. Qualification verification must be conducted through dedicated test procedures tailored to those conditions, including actual operating media or contaminants. The test data obtained from this document are suitable for evaluating the performance of aerospace hydraulic filter elements.