Relevant to manufacturers of components for automotive vehicles using compressed natural gas (CNG).

What is CNG testing and certification

Kiwa offers testing and certification services of automotive components for LPG, CNG, LNG and hydrogen sectors, as well as electromagnetic compatibility and several climatic tests. Kiwa is authorized to issue the E4 certification by the Dutch Vehicle Authority (RDW), one of the most renowned certification authorities in the world.

CNG testing and certification in Europe, North America and Australia

Outside Europe, Kiwa can support you for the testing and certification in many other marketplaces, such as North America (thanks to an agreement with CSA) and Australia (thanks to an agreement with SAI Global).

For specific information about the R110 please visit the UNECE website.

CNG components

The various components are:

  • Containers (or cylinders)
  • Accessories fitted to the cylinders
  • Pressure regulators
  • Automatic valves
  • Manual valves
  • Gas supply devices
  • Gas flow adjusters
  • Flexible fuel lines
  • Rigid fuel lines
  • Filling units or receptacles
  • Non-return valves
  • Pressure relief valves (discharge valves)
  • Pressure relief devices (temperature triggered)
  • Filters
  • Pressure or temperature sensors / indicators
  • Excess flow valves
  • Service valves
  • Electronic control units
  • Gas-tight housings
  • Fittings
  • Ventilation hoses.

If your product is not listed here, please contact us by filling out the 'Request Quotation' form.

If you wish to launch your automobile with one of the CNG components on the European market, you are compelled to certify all those components that use compressed natural gas (CNG) in their propulsion system, according the Regulation No. 110 (R110). For the European market you must have an E trademark on your products we well as being preferable in the Middle East and Asian countries.

Getting certified with Kiwa

The starting point for a quotation is Regulation No. 110 (R110).  After approval of the quotation by both parties the actual test work starts. A certificate will be sent to you by RDW when all the test work has been performed successfully and you have entered into a surveillance agreement with Kiwa.