ISO 27407:2010

Overview

ISO 27407:2010 - Hydraulic fluid power - Marking of performance characteristics on hydraulic filters - defines a standardized method for marking filters so users can quickly identify and compare key performance characteristics. The standard covers marking on filter elements and spin-on filters, specifying symbol layout, required data fields and references to the test methods used to determine the marked values. Marking is intended for the filter itself; customers may also request the same information on drawings or packaging.

Key topics and technical requirements

• Scope of marking: Applies to performance information placed on the filter, a label or accompanying documentation.
• Marked characteristics (filter elements):
  • Test flow rate (q)
  • Terminal differential pressure (∆p)
  • Average filtration ratio / beta ratio T βx(c) (per ISO 16889)
  • Filter retained capacity to terminal differential pressure (C_R)
  • Minimum collapse/burst pressure (pcb) (per ISO 2941)
  • Differential pressure at rated flow (per ISO 3968)
• Marked characteristics (spin-on filters): All of the above plus:
  • Installation procedure (tightening/installation symbols)
  • Housing pressure limits (minimum housing burst pressure Bmin)
  • Rated fatigue life (number of cycles Nf) and fatigue test cycle pressure range (per ANSI/(NFPA)T3.10.17)
• Symbol layout and graphics: Defines a general marking symbol (inlet/test parameters on left, tested characteristics on right) with graphical elements aligned to ISO 1219-1. Symbols must be legible and appropriately sized.
• Test method references: ISO 16889 (multi-pass method), ISO 2941 (collapse/burst), ISO 3968 (∆p vs flow), ANSI/(NFPA)T3.10.17 (spin-on fatigue/burst), ISO 1219-1 (symbols), ISO 5598 (vocabulary).

Applications and users

• Manufacturers: Standardize product markings, catalogs and test reports; improve traceability and claims substantiation.
• Design and OEM engineers: Select filters by comparable, clearly marked performance data (beta ratio, retained capacity, collapse/burst limits).
• Maintenance and reliability teams: Verify correct installation and service life expectations for spin-on filters.
• Purchasing and specification writers: Create procurement specs that mandate marked performance characteristics for supplier comparison.
• Certification and test labs: Report results using consistent marking formats.

Related standards

• ISO 16889 - Multi-pass filtration testing
• ISO 2941 - Collapse/burst verification
• ISO 3968 - Differential pressure vs flow evaluation
• ANSI/(NFPA)T3.10.17 - Spin-on fatigue/burst testing
• ISO 1219-1, ISO 5598

Using ISO 27407:2010 supports clarity in hydraulic fluid power systems by making filter performance data portable, comparable and traceable-helpful for selection, safety and maintenance decisions.