ISO 19973-5:2015 PDF

Scope: This part of ISO 19973 provides test procedures for assessing the reliability of the following types of pneumatic valves: — non-return (check) valves; — pilot-operated non-return valves; — shuttle valves; — dual pressure valves (AND function); — one-way adjustable flow control valves; — quick-exhaust valves by testing and the methods of reporting the results of testing. General test conditions and the calculation method are provided in ISO 19973-1. The methods specified in ISO 19973-1 apply to the first failure, as obtained with the three-points moving average (3PMA) method, without repairs, but excluding outliers. The lifetime of these pneumatic valves is usually given as a number of cycles. Therefore, whenever the term “time” is used in this part of ISO 19973, this variable is understood as a number of cycles. This part of ISO 19973 also specifies test equipment and threshold levels for tests to assess the reliability of these pneumatic valves.

ISO 19973-5:2015 Referenced Document

IEC 60050-191:1990 International electrotechnical vocabulary; chapter 191: dependability and quality of service
ISO 11727:1999 Pneumatic fluid power - Identification of ports and control mechanisms of control valves and other components
ISO 1219-1:2012 Fluid power systems and components - Graphical symbols and circuit diagrams - Part 1: Graphical symbols for conventional use and data-processing applications
ISO 19973-1:2015 Pneumatic fluid power - Assessment of component reliability by testing - Part 1: General procedures
ISO 5598:2008 Fluid power systems and components - Vocabulary
ISO 6358:1989 Pneumatic fluid power; components using compressible fluids; determination of flow-rate characteristics
ISO 80000-1:2009 Quantities and units - Part 1: General
ISO 8778:2003 Pneumatic fluid power - Standard reference atmosphere

2015 ISO 19973-5:2015 Pneumatic fluid power - Assessment of component reliability by testing - Part 5: Non-return valves, shuttle valves, dual pressure valves (AND function), one-way adjustable flow control valves, quick-exhaust valves