9.5.1. Maximum pressure drop Delta p



The pressure drop Dp in a pipeline with a maximum pressure p max of 8 bar op and above should not exceed a certain total loss by the time it reaches the consumer device :
    • Pipe system Dp £ 0,1 bar

The following values are recommended for the individual sections of the system:
    • Main line Dp £ 0,04 bar
    • Distribution line Dp £ 0,04 bar
    • Connection line Dp £ 0,03 bar

In pipe systems with lower maximum pressures (e.g., 3 bar op ) a pressure loss of 0,1 bar is higher in relative terms than in an 8 bar op system. In this case, a different value is recommended for the system as a whole:
    • Pipe system Dp £ 1,5 % pmax