About

Scope

Standardization in the field of fluid power ports, connectors, tubes, hose fittings and assemblies, comprising terminology, dimensions, and performance characteristics.

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Sustainable Development Goals

This committee contributes with 57 standards to the following Sustainable Development Goal:

9
Industry, Innovation and Infrastructure
50

Published ISO standards *

4

ISO standards under development *

16
Participating members
8
Observing members

* number includes updates

Reference Title Type
ISO/TC 131/SC 4/AHG 1 Revision of ISO 11926-1:1995 Working group
ISO/TC 131/SC 4/WG 1   Ports and connector stud ends Working group
ISO/TC 131/SC 4/WG 2   Flange ports and flange connectors Working group
ISO/TC 131/SC 4/WG 4   Hydraulic and pneumatic quick-action couplings Working group
ISO/TC 131/SC 4/WG 6   Methods for connecting hose fittings and tubes to connectors Working group
ISO/TC 131/SC 4/WG 9   Pneumatic tubing and connectors Working group
Liaison Committees to ISO/TC 131/SC 4

The committees below can access the documents of ISO/TC 131/SC 4:

Reference Title ISO/IEC
ISO/TC 5 Ferrous metal pipes and metallic fittings ISO
ISO/TC 5/SC 5 Threaded fittings, solder fittings, welding fittings, pipe threads, thread gauges ISO
ISO/TC 20/SC 10 Aerospace fluid systems and components ISO
ISO/TC 22/SC 33 Vehicle dynamics, chassis components and driving automation systems testing ISO
ISO/TC 23/SC 4 Tractors ISO
ISO/TC 45/SC 1 Rubber and plastics hoses and hose assemblies ISO
ISO/TC 127/SC 2 Safety, ergonomics and general requirements ISO

 

Liaison Committees from ISO/TC 131/SC 4

ISO/TC 131/SC 4 can access the documents of the committees below:

Reference Title ISO/IEC
ISO/TC 5 Ferrous metal pipes and metallic fittings ISO
ISO/TC 5/SC 1 Steel tubes ISO
ISO/TC 5/SC 5 Threaded fittings, solder fittings, welding fittings, pipe threads, thread gauges ISO
ISO/TC 20/SC 10 Aerospace fluid systems and components ISO
ISO/TC 22/SC 33 Vehicle dynamics, chassis components and driving automation systems testing ISO
ISO/TC 23/SC 4 Tractors ISO
ISO/TC 45/SC 1 Rubber and plastics hoses and hose assemblies ISO
ISO/TC 138 Plastics pipes, fittings and valves for the transport of fluids ISO

 

Organizations in liaison (Category A and B)
Acronym Title Category
CETOP European Oil Hydraulic and Pneumatic Committee A

Date Month Location TC/SC Note
25 June 2025 Virtual () ISO/TC 131/SC 4  

* Information definite but meeting not yet formally convened
** Provisional

ISO/TC 131/SC 4 - Secretariat

ANSI (United States)

National Fluid Power Association
6737 W. Washington Street, Suite 2350
Milwaukee 53214 WI
United States

Tel: +1-414-778-3344
Fax: +1-414-778-3361
Web:

  2. Taking part
  3. Who develops standards
  4. Technical Committees
  5. ISO/TC 131
  6. SC 4