GB/T 38206.5-2021Methods to assess the reliability of pneumatic components - Part 5: Non-return valves, shuttle valves, dual pressure valves(AND function), one-way adjustable flow control valves, quick-exhaust valves (English PDF)

1 Scope

This document specifies tests to evaluate the reliability of check valves, pilot-operated check valves, shuttle valves, dual-pressure valves (and valves), one-way throttle valves, and quick-discharge valves

Equipment, test conditions, test procedures, reliability thresholds, and test results processing methods.

This document applies to the first failure of the above-mentioned types of pneumatic components without maintenance, except for some abnormal values.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations

Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to

This document.

ISO 1219-1 Graphical symbols and circuit diagrams of fluid power transmission systems and components-Part 1.Used for general purpose and data processing

Graphical symbols (Fluidpowersystemsandcomponents-Graphicalsymbolsandcircuitdiagrams-Part 1.

Graphicalsymbolsforconventionaluseanddata-processingapplications)

Note. GB/T 786.1-2021 Graphical symbols and circuit diagrams of fluid power transmission systems and components Part 1.Graphical symbols (ISO 1219-1.2012, IDT)

ISO 5598 Fluid power systems and components-Vocabulary (Fluidpowersystemsandcomponents-Vocabulary)

Note. GB/T 17446-2012 Fluid Power System and Components Vocabulary (ISO 5598.2008, IDT)

ISO 8778 pneumatic standard reference atmosphere (Pneumaticfluidpower-Standardreferenceatmosphere)

Note. GB/T 28783-2012 pneumatic standard reference atmosphere (ISO 8778.2003, IDT)

ISO 11727 Pneumatic control valve and other components of the port and control mechanism identification (Pneumaticfluidpower-Ident- ificationofportsandcontrolmechanismsofcontrolvalvesandothercomponents)

Note. GB/T 32215-2015 pneumatic control valve and other components of the port and control mechanism identification (ISO 11727.1999, IDT)

ISO.19973-1 Pneumatic component reliability assessment method Part 1.General procedure (Pneumaticfluidpower-Ass- essmentofcomponentreliabilitybytesting-Part 1.Generalprocedures)

Note. GB/T 38206.1-2019 Pneumatic component reliability assessment method Part 1.General procedure (ISO.19973-1.2015, MOD)

ISO 80000-1 Quantity and Units Part 1.General (Quantities and Units-Part 1.General)

IEC 60050-192 International Electrotechnical Terminology Part 192.Reliability [InternationalElectrotechnicalVocabulary (IEV)-Part 192.Dependability]

Note. GB/T 2900.99-2016 credibility of electrotechnical terminology (IEC 60050-192.2015, IDT)

3 Terms and definitions

The terms and definitions defined in ISO 5598, ISO.19973-1, IEC 60050-192, and the following apply to this document.

Note. If there is a contradiction between the definition of a term in the four documents, the priority order is as follows. this document, ISO.19973-1, ISO 5598, IEC 60050-192. […]