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Standard

NS-EN 334:1999

Tilbaketrukket

Merknad: Denne standarden har en ny utgave: NS-EN 334:2019+A1:2024

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Omfang

This European Standard specifies constructional and functional requirements, regulator sizing, testing, documentation and marking of gas pressure regulators: - for inlet pressures up to 100 bar; - used at an ambient temperature range from -20 °C to +60 °C. which operate with fuel gases of the 1st and of the 2nd family in accordance with EN 437 in transmission and distribution networks and also in industrial installations. "Gas pressure regulators" hereafter will be called "regulators" except in the titles. This European Standard considers the following classes of regulators: - class 1: operating temperature range from -10 °C to 60 °C; - class 2: operating temperature range from -20 °C to 60 °C. For inlet pressures higher than 100 bar and/or ambient temperatures lower than -20 °C this European Standard may be used as a "guideline". This European Standard applies to regulators which use the pipeline gas as a source of control energy unassisted by any external power source. These regulators have no continuous discharge of gas into the atmosphere but temporary discharges from safety devices can occur. The regulators complying with the requirements of this European Standard may be declared as "in conformity with EN 334". This European Standard does not apply to: - regulators upstream from/on/in domestic gas-consuming appliances which are installed downstream of domestic gas meters; - regulators that comply with both of the following characteristics: - volumetric flow rate

Dokumentinformasjon

  • Standard fra SN
  • Publisert:
  • Tilbaketrukket:
  • Utgave: 1
  • Versjon: 1
  • Varetype: NAT
  • Products.Specs.pages
  • ICS 23.060.40
  • National Committee CEN/TC 235

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