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BSI 23/30424799 DC 2023

BSI 23/30424799 DC 2023

$13.70

BS EN ISO 22435. Gas cylinders. Cylinder valves with integrated pressure regulators. Specification and type testing

Published By Publication Date Number of Pages
BSI 2023 42
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PDF Catalog

PDF Pages PDF Title
1 30424799-NC.pdf
3 ISO_DIS 22435 ed.2 – id.81027 Enquiry PDF (en).pdf
7 Foreword
9 Introduction
11 1 Scope
2 Normative references
12 3 Terms and definitions
16 4 Symbols and descriptions
17 5 Design requirements and considerations
5.1 General
5.2 Description
18 5.3 Materials
5.4 Pressure and flow indicating devices
5.4.1 General
5.4.2 Flowmeters
19 5.4.3 Pressure indicators and flow gauges
5.5 Outlet connection
5.6 Outlet pressure for acetylene
5.7 Flow control valve (flow controller)
5.8 Pressure adjusting device
5.9 Filtration
20 5.10 Endurance of the VIPR pressure regulating system
5.11 Flow and pressure performance for a VIPR with a pressure outlet
5.11.1 Flow performance and characteristics
5.11.2 Coefficient of pressure increase upon closureā‚¬R
5.11.3 Irregularity coefficientā‚¬i
5.12 Flow performance for a VIPR with a flow metering device
5.13 Pressure relief valve
21 5.14 Leakage
5.15 Mechanical strength
5.16 Pressure resistance
5.17 Resilience to ignition
22 5.18 Constructional requirements
5.19 Resistance to vibration
5.20 Resistance to shock
5.21 Overtorque of the pressure adjusting device
23 6 Type testing
6.1 General
6.2 Documentation
6.3 Test samples
24 6.4 Test report
6.5 Test temperatures
6.6 Test gas
6.6.1 Gas quality
6.6.2 Reference conditions
6.6.3 Leak tightness tests
25 6.6.4 Endurance of a VIPR pressure regulating system
6.7 Test schedule
26 6.8 Mechanical strength test of the low pressure chamber
6.9 Pressure resistance test of the low pressure chamber
6.10 Mechanical strength test of flowmeters
6.11 Overpressure and leakage test for pressure indicators and flow gauges
27 6.12 Flow and pressure performance test for a VIPR with a pressure outlet
6.12.1 General
6.12.2 Standard discharge, Q1, rated outlet pressure, p2, and maximum discharge Qmax test
28 6.12.3 Flow characteristic test
30 6.12.4 Coefficient of pressure increase upon closure R test
6.12.5 Irregularity coefficient i test
33 6.13 Accuracy and flow stability of a VIPR with a flow metering device test
6.14 Pressure relief valve test
6.15 Operating and loosening torques test
34 6.16 Endurance of the VIPR pressure regulating system
6.17 Leak tightness tests
6.17.1 Number of samples
6.17.2 Internal leakage across the regulating valve seat
35 6.17.3 External leakage
6.18 Visual examination
7 Marking
36 8 Instructions
37 Annexā‚¬A (informative) Vibration test
38 Annexā‚¬B (informative) Shock test
39 Annexā‚¬C (informative) Overtorque test for the pressure adjusting device
40 Annexā‚¬D (informative) Promoted ignition test
42 Bibliography

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BSI 23/30424799 DC 2023
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