Max. material inlet pressure P_Work  :

The allowed working pressure has to be lower than this value. P_Work can appear dynamic. This dynamic pressure can be more than P_Work temporary (range of minutes). The allowed overstepping is between 10 – 20 %. It should be noted that for special products additional recommended pressure descriptions are necessary.

Maximum pressure P_Max  :

This pressure must not occur dynamically. P_Max can occur at DOPAG machines, when the outlet valve closes abruptly and the pump still works. Therefore this pressure has to be relieved during longer waiting times.