DESEINOR DSSY-40AC is a self-priming diaphragm transfer pump developed for AdBlue/DEF. The transfer pump fluid chamber is made of modified PA66 engineering plastic for resistance to urea solution, and the pump can also handle compatible low-concentration weak acids and alkalis.

An integrated power switch and internal bypass valve allow the pump to continue running briefly after the dispensing nozzle closes. Supplied with a European-standard power plug, inlet and outlet fittings, and hose clamps, the transfer pump can be integrated into AdBlue dispensers, drum transfer systems, fleet dispensing points, and small chemical replenishment applications.