INTERNATIONAL STANDARD
testingofLPGcylindervalves-- Gascylinders-Specificationsand Manuallyoperated
Bouteillesagaz-SpecificationsetessaispourvalvesdebouteillesdeGPL-Fermeture manuelle
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Contents
Page
1 Scope. 12 Normativereferences. 13 Terms and definitions. 14 Design and specification. 4.1 General. 44.2 Materials. 4 54.2.1 4.2.2 General Operating temperatures. 5 54.2.4 4.2.3 Copper alloys. Non-metallic materials. 54.3 Essential ponents. 5 64.3.2 4.3.1 Valve operatingmechanism. Valve body. 6 64.3.3 Valve stem. Valve outlet. 64.3.5 4.3.4 Excessflow valve 6 74.4 Optional ponents. 4.4.1 General. 74.4.2 Pressure relief valve. 74.4.3 4.4.4 Fixed liquid level gauge. Eduction tube. 7 74.4.5 4.4.6 Excess flow valve Non-return valve. 7 84.4.7 Sealing cap and sealing plug Liquid level indicator. 84.4.8 4.4.9 Sediment tube. 8 84.5 4.6 Leak tightness. Operating torque. 8 84.7 Closing torque. 84.8 Opening torque. 8
Valve type test.5.1 General. 95.2 5.3 Test procedure and test requirements. Test samples. 10 95.4 5.5 Hydraulic pressure test. Inspection. 115.5.1 Procedure. 11 115.6 5.5.2 External and internal leak tightness tests. Requirement. 11 115.6.2 5.6.1 Procedure. Requirement. 115.7 Valve stem test. 12 125.7.1 5.7.2 Procedure. Requirement. 12 135.8 Hand wheel fire exposure test. Procedure. 135.8.1 5.8.2 Requirement. 13 135.9 Impact test. 5.9.1 General 13 135.9.2 Procedure. 13
5.10 Excessive closing torque test. 5.9.3 Requirement.5.10.1 Procedure.5.11 Excessive opening torque test. 5.10.2 Requirement.5.11.2 5.11.1 Requirement. Procedure.5.12 Endurance test.5.12.1 5.12.2 Requirement. Procedure.5.13 Examination of dismantled valves 5.13.1 Procedure.5.13.2 Requirement.5.14 Excess flow valve test. 5.14.1 General.5.14.2 5.14.3 Excess flow valve test with air. Excess flow valve test with water.5.14.4 Excess flow strength test.5.15 Non-return valve test. 5.15.1 Procedure.Vibration test. 5.15.2 Requirement.5.16 5.16.1 Procedure.Documentation and test report. 5.16.2 Requirement. 196 6.1 Documentation 19 196.2 Test report. 197 Production testing. Markings. 198 Annex A(normative) Special valves 19 21Annex B (normative) Production testing and inspection. 22Annex C (normative) Special low temperature requirements. 23Annex D (normative) Vibration testing. 24Bibliography 25
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Foreword
bodies (IsO member bodies). The work of preparing International Standards is normally carried outthrough ISo technical mittees.Each member body interested in a subject for which a technical mittee has been established has the right to be represented on that mittee. Internationalorganizations governmental and non-governmental in liaison with ISo also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters ofelectrotechnical standardization.
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on the Iso list of patent declarations received (see
Any trade name used in this document is information given for the convenience of users and does notconstitute an endorsement.
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This document was prepared by Technical Committee ISO/TC 58 Gas cylinders Submittee SC 2 Cylinder fittings.
Any feedback or questions on this document should be directed to the user's national standards body.Aplete listing of these bodies can be found at
This second edition cancels and replaces the first edition (ISo 15995:2006) which has been technically revised. The main changes pared to the previous edition are as follows:
- introduction of new definitions;
- change of informative Annex on production testing to normative Annex;
- new requirement for the valve to withstand vibration during transport and introduction of vibration testing:
--restructure of Clause 5 valve type testing:
--removal of valve testing after ageing;
- increase of valve test pressure for leak tightness tests;
--introduction of excess flow valve testing: and
-- introduction of non-return valve testing.
