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eLibrary > 23/30424795 DC BS EN ISO 10297. Gas cylinders. Cylinder valves. Specification and type testing >

23/30424795 DC BS EN ISO 10297. Gas cylinders. Cylinder valves. Specification and type testing, 2023

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23/30424795 DC BS EN ISO 10297. Gas cylinders. Cylinder valves. Specification and type testing, 2023

ISO_DIS 10297 ed.4 - id.81026 Enquiry PDF (en).pdf [Go to Page]
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Valve description
5 Valve design requirements [Go to Page]
5.1 General
5.2 Materials
5.3 Valve connections
5.4 Mechanical strength [Go to Page]
5.4.1 Resistance to hydraulic pressure
5.4.2 Resistance to mechanical impact
5.4.3 Resistance to valve stem impact
5.5 Valve operating mechanism [Go to Page]
5.5.1 Opening and closing of the valve
5.5.2 Endurance
5.5.3 Resistance to overtorquing
5.5.4 Acetylene specific requirements
5.6 Valve operating device [Go to Page]
5.6.1 Closing direction
5.6.2 Handwheel diameter
5.6.3 Exposure to flame
5.7 Leakage
5.8 Resistance to ignition
5.9 Flow capacity
6 Type testing [Go to Page]
6.1 General
6.2 Test schedule
6.3 Documentation
6.4 Test samples
6.5 Test report
6.6 Test temperatures
6.7 Test pressures [Go to Page]
6.7.1 Valve hydraulic test pressure
6.7.2 Valve test pressure
6.8 Test gases [Go to Page]
6.8.1 Gas quality
6.8.2 Leak tightness tests
6.8.3 Endurance tests
6.8.4 Acetylene decomposition test
6.8.5 Oxygen pressure surge test
6.9 Hydraulic pressure test
6.10 Flame impingement test
6.11 Excessive torque tests [Go to Page]
6.11.1 Handwheel operated valves
6.11.2 Key and toggle operated valves
6.11.3 VIPR type€B and VIPR type C with the flow selector acting as the primary valve operating mechanism
6.12 Leak tightness tests [Go to Page]
6.12.1 General
6.12.2 Internal leak tightness test
6.12.3 External leak tightness test
6.13 Endurance test
6.14 Endurance test of VIPR types€B and C
6.15 Endurance test of the filling connection non-return valve
6.16 Visual examination
7 Marking
Annex€A (normative) Impact test
Annex€B (normative) Tests for acetylene valves
Annex€C (normative) Oxygen pressure surge test
Annex€D (informative) Example of a vacuum test
Annex€E (normative) Endurance test machine
Annex€F (normative) Required tests for validation of changes and/or material variants within a valve design
Bibliography [Go to Page]

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23/30424795 DC BS EN ISO 10297. Gas cylinders. Cylinder valves. Specification and type testing, 2023

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