ADR (carriage of dangerous goods by road) / RID (carriage of dangerous goods by rail): European type approval in accordance with 2010/35/EU

What does the abbreviations ADR and RID stand for?
The European Agreement concerning the International Carriage of Dangerous Goods by Road, ADR (Accord européen relatif au transport international des marchandises Dangereuses par Route), which was first concluded on 30 September 1957, regulates, among other things, the classification of the goods to be transported as dangerous goods, the associated safety measures, labelling, documentation on transport documents, written instructions for the transport of dangerous goods and the construction and testing of containers, tanks and vehicles for the transport of dangerous goods. Currently, the version dated 4 July 2019 applies.

RID stands for Règlement International concernant le transport des marchandises Dangereuses par chemin de fer and regulates the transport of dangerous goods by rail.

Both directives apply in the following countries:
Albania, Andorra, Azerbaijan, Austria, Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Georgia, Greece, Hungary, Iceland, Ireland, Italy, Kazakhstan, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Macedonia, Montenegro, Netherlands, Norway, Poland, Portugal, Moldova, Romania, Russian Federation, San Marino, Serbia, Slovak Republic, San Marino, Slovenia, Spain, Sweden, Switzerland, Tajikistan, Turkey, Tunisia,
Ukraine, United Kingdom

According to ADR/RID approved quick couplings from WALTHER
The quick couplings of our Clean Break CN series meet the requirements of the Directive 2010/35/EU on transportable pressure equipment in conjunction with ADR/RID 2017 and DIN EN 14432:2014 for hazardous goods.

This approval* permits the use of CN quick couplings for transfer processes of liquid chemical products classified as hazardous into / from “ADR/RID-approved containers” as a secondary product shut-off valve downstream of the bottom valve and as a primary shut-off valve for peak use in road and rail vehicle tanks.

In the case of tanks intended for the transport of these dangerous goods, the fittings can thus be used for filling and removal operations. The large-calibre quick couplings of the WALTHER CN series enable safe and fast loading even of these critical, also non-lubricating, dangerous goods liquids due to their exceptional flow values!

Application example: Filling and removal process for containers in the pharmaceutical industry. Here, high-purity solvent, which is used as a precursor for pharmaceutical products, is classified as hazardous material. Therefore, appropriately approved containers and filling solutions are indispensable for the transport of the product.

In addition to the ADR/RID* approval for filling operations of hazardous liquid goods between mobile and stationary machine, our CN quick couplings offer several other advantages:

  • The CN Series quick-connect (self-sealing) couplings also effectively protect your fluids to be transferred against the harmful introduction of ambient air into the piping system through this valve technology, also known as “dry-break”.
  • The locking device is not placed in the flow coupling for hygienic and cleaning reasons. The CN couplings therefore have excellent hygienic properties, are easy to clean and SIP-compatible.
  • All these quick coupling systems can be coupled against high differential pressures and are insensitive to transverse loads (forces acting at 90° to the axial direction) – no leaks occur.
  • The robust and durable CN quick couplings reduce loading times to a minimum thanks to high flow values and simple coupling / uncoupling procedures. During the coupling process there is no twisting of the hose, a cost-intensive swivel is not necessary.


For easier handling, we recommend using the self-sealing coupling with its locking sleeve as a fixed part and the self-sealing adapter as a free part.

Technical information for use as ADR / RID quick coupling*:

  • Permissible media: liquids only!
  • Available sealing materials: NBR, FKM, EPDM, FFKM, connection sealing also with PTFE
  • Material: stainless steel 1.4571
  • ATEX** integrated as standard!
  • Maximum permissible operating pressure:
    – 25 bar for nominal sizes 25, 40 and 50 mm
    – 10 bar for nominal sizes 80 and 100 mm
  • Manufacturing pursuant to 3.1 according to DIN EN 10204



Please clarify any deviating or additional requirements with our consultants. Please do not hesitate to contact us.

* Note: This approval does NOT apply to ADN (Transport of Dangerous Goods on Inland Waterways).

** ATEX-compliant design in accordance with equipment group II/category 2 of the Explosion Protection Directive 2014/34/EU.