NF EN ISO 17778
Plastics piping systems - Fittings, valves and ancillaries - Determination of gaseous flow rate/pressure drop relationships
ISO 17778:2015 specifies a method for determining the flow rate/pressure drop relationship of components for plastics piping systems when tested using air at 25 mbar.
ISO 17778:2015 specifies a method for determining the flow rate/pressure drop relationship of components for plastics piping systems when tested using air at 25 mbar.
Le présent document décrit une méthode pour déterminer le rapport débit/ perte de charge des raccords mécaniques, des robinets, des prises de branchement ainsi que des équipements auxiliaires, qui composent les systèmes de canalisation en polyéthylène (PE) déstinés à la distribution de combustibles gazeux.
- Avant-propos
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1 Domaine d'application
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2 Références normatives
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3 Principe
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4 Appareillage
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5 Préparation des éprouvettes
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6 Mode opératoire
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7 Calcul des résultats
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8 Rapport d'essai
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