Frequently Asked Questions

What is the PED?

PED stands for pressure equipment directive. In an effort to harmonize national legislation regarding the design, manufacture and test of pressure vessels, the European Parliament and the Council of the European Union adopted the PED. The PED went into effect on May 29, 2002, setting forth that all pressure vessels manufactured and placed on the market in the EU after such date would be subject to the requirements of the PED.

Does DADCO comply with the PED?

Yes, DADCO is certified by TÜV CERT, TÜV Rheinland/Berlin-Brandenburg as conforming to the PED. All DADCO nitrogen gas springs are compliant and those for sale in the EU, required by the PED to carry the CE mark, are marked CE 0035. According to the PED, the CE mark may only be used on those cylinders that fall within specified categories according to the PED (i.e. smaller sizes do not receive the CE mark).

Did conformity to the PED require changes to DADCO’s gas spring design?

No, we were not required to make any changes to the DADCO gas spring design to be compliant with the PED.

What module of the PED is DADCO approved under?

DADCO is approved by TÜV CERT, TÜV Rheinland/Berlin-Brandenburg under PED, Module A1.

Will there be any issues in regard to repair or retrofit of older DADCO nitrogen gas springs?

No, the ability to repair or retrofit existing DADCO cylinders will still be as easy as it has always been. All of the components of PED conforming gas springs are the same as those manufactured prior to the establishment of the PED. The best path for maintenance safety is proper training, adherence to published maintenance instructions, and use of parts from the same OEM.

Does the PED require audit of materials used in production?

Yes, the PED requires pressure vessel materials to have a high level of traceability. These materials must also conform to impact and elongation requirements. All materials used in the 90.10 Series (ISO) already conformed to this requirement.

What is the difference between DADCO CE marked cylinders and those not CE marked?

The design, processing, materials and level of quality are the same. The CE marked cylinders are subject to additional weld and pressure tests as required by the PED. The CE mark is only required on those products being placed on the market in the EU, the CE mark is available as an option for domestic shipments.