Gas installation

POM gate valves installed in underground PE pipelines

This approval requirement specifies the requirements for the polyoxymethylene (POM) gate valves installed in underground PE pipelines applied for the transport of gaseous fuels in accordance with the 2nd and 3rd family as per NEN-EN 437. 
This approval requirement is applicable to POM gate valves, with mechanical couplings and an outer diameter of ≤ 63 mm. The maximum permissible operating pressure is 4 bar.

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For who?

Manufacturers, grid companies, representatives, retailers, constructors and in installers

Process steps

An approved quotation is the beginning of a tested and an approved product. The most important steps are:

- Initial product assessment: the assessment to determine if all requirements in the approval requirement are met.

- The result is a certificate upon which is mentioned to which requirements the product complies.

- Product verification: the assessment performed after granting certification to determine that the certified products still comply with the requirements in the approval requirement. 

- Control on quality system requirements: control on following the IQC scheme (as described in the approval requirement) and the procedures.

For more information you can contact our certification engineers.