ISO 17579:2025

Ships and marine technology — Design and testing requirements of pneumatic quick-closing valves

This document specifies requirements for the design and tests of pneumatic driven quick-closing valves, used in ship fuel and lubricating oil systems to stop the fluid flow in the event of a leak. This document is applicable to valves of nominal diameter (DN): 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, and 300, corresponding to nominal pipe sizes (NPS): 1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 4, 5, 6, 8, 10, and 12. NOTE This document is mainly intended for use by producers. Onboard ship inspection and maintenance after the delivery and installation of the valve can help ensure continued proper performance.

Navires et technologie maritime — Exigences de conception et d'essai des soupapes pneumatiques à fermeture rapide

General Information

• Status: Published
• Publication Date: 20-Mar-2025
• ICS: 47.020.30 - Piping systems
• Technical Committee: ISO/TC 8/SC 3 - Piping and machinery
• Drafting Committee: ISO/TC 8/SC 3 - Piping and machinery
• Current Stage: 6060 - International Standard published
• Start Date: 21-Mar-2025
• Due Date: 21-Mar-2025
• Completion Date: 21-Mar-2025

Standards Content (Sample)

International
Standard
ISO 17579
First edition
Ships and marine technology —
2025-03
Design and testing requirements of
pneumatic quick-closing valves
Navires et technologie maritime — Exigences de conception et
d'essai des soupapes pneumatiques à fermeture rapide
Reference number
© ISO 2025
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ii
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Pressure and temperature . 3
5 Structure and design . 3
5.1 General .3
5.1.1 Structure .3
5.1.2 Materials .3
5.2 Design and materials of the body .4
5.2.1 Design . .4
5.2.2 Materials .4
5.2.3 Manufacturing .4
5.3 Design and materials of the bonnet .4
5.3.1 Design .4
5.3.2 Materials .4
5.4 Design and materials of the disc .4
5.4.1 Design .4
5.4.2 Materials .4
5.5 Design and materials of the stem .5
5.5.1 Design .5
5.5.2 Materials .5
5.6 Stem sealing .5
5.7 Design and materials of the spring.5
5.7.1 Design .5
5.7.2 Materials .5
5.8 Design and materials of the pneumatic components .5
5.8.1 Design . .5
5.8.2 Materials .5
5.9 Design and materials of the seat . .6
5.9.1 Design . .6
5.9.2 Bore materials .6
5.10 Design and materials of the connection .6
5.10.1 Design .6
5.10.2 Materials .6
5.11 Requirements of pneumatic components and hand wheel .6
5.12 Surface treatment .6
6 Test and inspection . 6
6.1 General .6
6.2 Material test .6
6.3 Non-destructive testing (NDT) . .7
6.3.1 General .7
6.3.2 Dye penetrant testing (PT) .7
6.3.3 Retest .7
6.3.4 Submission of inspection results .7
6.4 Dimension check .7
6.5 Visual inspection .7
6.6 Operating tests .7
6.7 Pressure tests .8
6.7.1 General .8
6.7.2 Pressure tests in ambient temperature .8
6.7.3 Test procedures and methods .8

iii
6.8 Fire-resistance test .8
7 Marking . . 8
Annex A (informative) Examples of PQCV construction . 10
Bibliography .12

iv
Foreword
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with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
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this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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