Backwash filter automatic: Filter complete with red bronze housing, filter and backwashing elements, flange connection PN 16 (232 psi) according to German standard DIN 2501, part 1 (without flanges), with stainless steel filter element 100µm according to DVGW guidelines (200µm on request). Rinsing is executed automatically and electronically controlled. The process is differential pressure controlled with time priority. Optical operation- and fault indication, transformer plug with safe 12V low voltage and possibility of manual rinsing. Fault signal (potential free contact) for building management system avaible. No additional differential manometer necessary.