Material requirements for direct contact with AdBlue

In order to avoid contamination of automotive urea solutions and corrosion of containers, pipes, valves, connectors, gaskets, etc., it is necessary to ensure that the urea solution of the vehicle is compatible with the material in direct contact at all stages of handling, transportation, storage and sampling.

Highly alloyed austenitic Cr-Ni-steels and Cr-Ni-Mo-steels, for example in accordance with EN 10088-1, EN 10088-2 and EN 10088-3 (i.e. 1.4541 and 1.4571), or stainless steel 304 (S30400), 304L (S30403), 316 (S31600) and 316L (S31603) in accordance with ASTM A240, ASTM A276 and ASTM A312

Titanium

Ni-Mo-Cr-Mn-Cu-Si-Fe alloys, e.g. hastelloy c/c-276

Polyethylene, free of additives

Polypropylene, free of additives

Polyisobutylene, free of additives

Perfluoroalkoxyl alkane (PFA), free of additives

Polyfluoroethylene (PFE), free of additives

Polyvinylidenefluoride (PVDF), free of additives

Polytetrafluoroethylene (PTFE), free of additives

Copolymers of vinylidenefluoride and hexafluoropropylene, free of additives

NOTE 1 The sequence given in this list does not constitute a ranking of the recommended materials. NOTE 2 Materials made of plastics can contain various kinds of additives used either for processing or for special kinds of serviceability. These additives can possibly migrate into AUS 32. For this reason, it is advisable that special care be taken for testing the contamination of AUS 32 by additives from plastic materials used in direct contact with AUS 32.

EverBlue Chemicals always insists on using qualified contact materials to provide customers with high-quality AdBlue /Diesel exhaust fluid (DEF) .Our main products cover AdBlue(DEF) , AdBlue production machine , Urea , filling machine ,SCR accessories. We provide AdBlue with various kinds of packing such as 5L ,10L , 20L , 205L , 1000L , 23000L .

How SCR technology works?

AdBlue  DEF is a consumable that must be used in SCR technology.

SCR technology uses a catalyst system can effectively reduced the emission of nitrogen oxides and solid particles produced by diesel engines into nitrogen and water.The main components of the SCR system include the catalyst, the AdBlue injection unit, the urea tank and the AdBlue dose controller.

Process of SCR technolog : the urea tank automatically ejects the AdBlue (diesel exhaust fluid ) when nitrogen oxides are found in the exhaust pipe and the oxidation-reduction reaction of AdBlue and nitrogen oxides in SCR catalytic reaction tank produces non-pollution nitrogen and water.

With the intelligent control of SCR system, the car will be unable to start when the AdBlue in the urea tank is insufficient .In order to ensure the normal running of the vehicle, there should be sufficient AdBlue for the vehicle.