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AFNOR
NF EN IEC 61558-2-16
En Vigor
2025-03-14
Safety of transformers, reactors, power supply units and combinations
thereof - Part 2-16: Particular requirements and tests for switch mode
power supply units and transformers for switch mode power supply units
for general applications
AFNOR
NF EN 1074-3
En Vigor
2000-10-01
Valves for water supply - Fitness for purpose requirements and
appropriate verification tests - Part 3 : check valves
AFNOR
AFNOR
NF E29-677
En Vigor
1981-09-01
Gas cylinders. Taper screw thread for valve stem and cylinder neck
assembly. Nominal diameter : 28,3 - Taper 3/25, 14 TPI SI. Gauge requirements.
