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april 2011

Which are the standards for meter valves?

The documentation with the meter valves as prescribed by regulations.

For connections to the distribution network and to the meter it is necessary to use meter valves which guarantee the interception of the fuel fluid and the isolation of the system from the network.
Made with a closing ball, these meter valves conform to EN331 which defines all criteria for designing and testing these articles. Not only, the standard also defines the marking and minimal instructions to be provided for their installation and usage.
The minimum data which must be reported on the meter valves consists of: the mark or the name of the manufacturer, the nominal DN size, the class of maximum operating pressure also called MOP, if necessary the direction of flow that must pass through the valve must also be indicated and finally, at least the year of production, which can also be written using a conventional code.
Meter valves must also be accompanied, according to law, by a booklet written in the language of the country where they will be sold and which shows the important information concerning: how to install the product, its use and any operating maintenance required during its useful life, if necessary the installation position for a proper use must also be reported, and last but not least its maximum and minimum temperatures of use and above all its maximum pressure of use.


See also
29/11/2014 Key-locked meter valves The law prescribes that meter valves should also be equipped with a security key.

29/09/2018 Valves for gas meters for management bodies of gas networks The valves for gas meters with coded key safety lock to reduce unauthorized delinquencies and withdrawals

29/10/2014 Marking non-extensible stainless steel flexible tubes. EN14800 legislation indicates how stainless steel flexible tubes should be marked.

29/03/2015 Data and certificates in support of a shut-off valve The shut-off valve is identified by the lead tag of the inspector at the time of testing

29/02/2020 Hose for LPG realized according to the EN ISO 3821 standard Characteristics of the hose for LPG laid down by the ISO 3821 standard relating to welding equipment

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