ISO/TC 131 Fluid Power Systems Meets in Milan, Italy

The fall ISO/TC 131 meetings were held in Milan, Italy from October 7 – 17, 2019. A record number of fluid power experts attended a combination of 17 subcommittee and/or working group meetings that focused on hydraulic and pneumatic quick-action couplings, o-rings, seals, contamination control/filters, cylinder mounting dimensions, component and system sound measurement, and water hydraulics. Participating countries included Poland, Belgium, France, Italy, Germany, the United States, the United Kingdom, Japan, China, and Turkey.

Highlights from the meetings include:

  • Current chairmen and conveners were reconfirmed for a three-year term in subcommittee 4 (connectors) and subcommittee 6 (contamination control). A new convener was also approved for subcommittee 8 (hydraulic component and system sound measurement.)
  • An international laboratory study was completed and the results were presented for the calibration of automatic particle counter for liquids.
  • A new work item on the filter multi-pass test under cyclic flow conditions will be reactivated based on round robin analysis done this past year.
  • New proposals on pressure ratings, hydraulic hose lengths and requirements, pressure control valves, switching time using cross-correlation theory, and hydraulic fluid power filter elements were presented and discussed in the working groups as possible future work.

NFPA would like to thank the Ente Italiano di Normazione (UNI) for hosting the fall meetings.

Please note: The 2020 spring meeting cluster, originally scheduled in Beijing for the week of May 11 – 15, has been moved to South Korea due to travel restrictions in and out of China. TC 131 subcommittees and working groups involved in sealing devises, connectors, contamination control, and cylinders are scheduled to meet. The fall 2020 meeting cluster, scheduled for October 12 – 16, 2020, has also been moved from the United States to Paris, France due to travel restrictions.

U.S. volunteers are urgently needed at the committee tables to participate in fluid power standards development. If you would like to learn how to get involved in the ISO subcommittees/working groups and/or in the U.S. technical advisory group committees, contact Denise Husenica at (414) 778-3354 or email

Recent Posts

Support a Fluid Power Club Near You!

NFPA supports student organizations at universities with annual stipend funding to help students learn about fluid power while they work on educational and technical projects. Currently for the 2023-24 academic year, there are 19 universities from across the country participating: If you are looking to get involved with these Fluid Power Clubs, see below for…

Read More about Support a Fluid Power Club Near You!

Volunteers Needed for 2023-24 Fluid Power Vehicle Challenge Midway Reviews

Mark your calendars for the NFPA Fluid Power Vehicle Challenge Design and Specification Midway Reviews, happening in December and January. This is a fantastic opportunity for industry members to get engaged and connect with students. The reviews are 45-minute webinar presentations with 10 minutes of Q&A from the judges. During this review, students will showcase…

Read More about Volunteers Needed for 2023-24 Fluid Power Vehicle Challenge Midway Reviews

2024 Annual Conference – See Who’s Coming and Suite Deal

2024 Annual ConferenceFebruary 27-29, 2024Orlando, FLRegister | Book Your Hotel Room Fluid power professionals looking to connect with others in the industry will have ample opportunities at NFPA’s 2024 Annual Conference. You can plan your networking strategy using the AC See Who’s Coming list to preview who will be there, including CEOs, top decision-makers and other key players in…

Read More about 2024 Annual Conference – See Who’s Coming and Suite Deal