DPS
Drejtoria e Përgjithshme e Standardizimit

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ISO/CD 4548-9

Methods of test for full-flow lubricating oil filters for internal combustion engines — Part 9: Inlet and outlet anti-drain valve tests

General information

Current stage: 30.99 Effective date: Mar 20, 2026

Originator: ISO

Owner: ISO/TC 70

Type: International Standard

Scope

ISO 4548-9:2007 specifies methods of measuring the effectiveness of either inlet or outlet anti-drain valves if fitted to a full-flow lubricating oil filter of the "spin-on" or "easy change" type, for internal combustion engines.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 4548-9:2008

NOW

IN_DEVELOPMENT
ISO/CD 4548-9
30.99 CD approved for registration as DIS
Mar 20, 2026