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Norm
ÖNORM EN 334
Issue date: 2005 05 01
Gas pressure regulators for inlet pressures up to 100 bar
This document specifies constructional and functional requirements, regulator sizing, testing, documentation
and marking of gas pressure regulators used in the pressure ...
Withdrawn: 2009 05 01
Publisher:
Austrian Standards International
Format:
Digital | 94 Pages
Language:
German
| English
Currently valid:
Optionally co-design standards:
ICS
This document specifies constructional and functional requirements, regulator sizing, testing, documentation
and marking of gas pressure regulators used in the pressure regulating stations:
for inlet pressures up to 100 bar and nominal diameters up to DN 400;
for an operating temperature range from -20 °C to +60 °C,
which operate with fuel gases of the 1st and 2nd family in accordance with EN 437 in transmission and
distribution networks and also in commercial and industrial installations.
"Gas pressure regulators" hereafter will be called "regulators" except in the titles.
The harmonised part of this document deals with standard gas pressure regulators used in pressure
regulating stations complying with EN 12186 or EN 12279. For gas pressure regulators integral strength type
when used in pressure regulating stations complying with EN 12186 or EN 12279, Annex ZA lists all
applicable Essential Requirements except the external resistance to environmental conditions where corrosion
occurs.
This document 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.
This document applies to regulators which use the pipeline gas as a source of control energy unassisted by
any external power source.
The regulator may incorporate a creep (venting) relief device, complying with the requirements in Annex F.
The regulators complying with the requirements of this document may be declared as "in compliance with
EN 334" and bear the marking ¿EN 334¿.
This document does not apply to:
regulators upstream from/on/in domestic gas-consuming appliances which are installed downstream of
domestic gas meters;
regulators in accordance with prEN xxxxxx (WI 00235003 under preparation by CEN/TC 235);
regulators for which a specific document exists (e.g. EN 88, etc.);
industrial process control valves in accordance with EN 1349.
ÖNORM EN 334/A1
2001 01 01
Gas pressure regulators for inlet pressures up to 100 bar (Amendment)
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