NEN EN 13175 : 2014
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
LPG EQUIPMENT AND ACCESSORIES - SPECIFICATION AND TESTING FOR LIQUEFIED PETROLEUM GAS (LPG) PRESSURE VESSEL VALVES AND FITTINGS
04-01-2019
01-12-2013
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Operating conditions
5 Materials
5.1 General
5.2 Metallic materials
5.3 Non-metallic components
5.4 Lubricants, sealants and adhesives
6 Design - general requirements
6.1 General
6.2 Seats and seals
6.3 Springs
6.4 Threads
6.5 Flanges
7 Design - specific requirements
7.1 Excess flow valve
7.2 Non-return valve
7.3 Shut-off valves
7.4 Filler valve
7.5 Occasional liquid withdrawal valve
7.6 Internal valve
7.7 Vapour equalising valve
7.8 Multipurpose valve
7.9 Breakaway coupling
7.10 Pressure gauge
7.11 Temperature gauge
7.12 Plugs and caps
8 Testing of the design
8.1 General
8.2 Over torquing deformation test
8.3 External leakage test
8.4 Seat leakage test
8.5 Residual flow test
8.6 Endurance test
8.7 Pressure strength test
8.8 Excess flow test
8.8.1 General
8.8.2 Excess flow test with air
8.8.3 Excess flow test with water
8.8.4 Excess flow strength test
8.9 Weak section strength test
8.10 Stress cracking test
8.10.1 General
8.10.2 Mercurous nitrate immersion test
8.10.3 Moist ammonia air stress cracking test
8.11 Vacuum test
8.12 Flow resistance test
8.13 Test report
9 Production testing
10 Marking
11 Documentation
Annex A (normative) ACME connections
Annex B (normative) Special low temperature requirements for
valves
Annex C (normative) Production testing and inspection
Annex ZA (informative) Clauses of this European Standard
addressing essential requirements or other
provisions of EU Directives
Bibliography
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