Dungs MB-VEF 425 B01 S12 MultiBloc Gas Air Ratio Valve - 230VAC Obsolete Note: Always match the full

Note: Always match the full Siemens part number and electrical specification shown on the actuator rating plate

with spring washer and O-ring

All gas-bearing parts are made of stainless steel 1

Pre-purge time with air damper open: 10s

523A17 - 110V

Dungs MB-VEF 425 B01 S12 MultiBloc Gas Air Ratio Valve - 230VAC Obsolete Note: Always match the fullDungs MBVEF 420 B01 S12 Solenoid Valve The valve combines a valve proving system, min max pressure switch and a pressure limiter. Sensitive adjustment of gas and air pressure ratio Servo pressure regulator as per DIN EN 88 1 Class A Group 2; EN 12067 1 425 = DN50 Outlet Pressure 0. 5 kPa (5 mbar) to 10 kPa (100 mbar) Inlet Pressure up to 36 kPa (360 mbar) For the MB VEF 425 insert an external gas filter e. g. Dungs GF 520 1. Possible Flange Sizes: Rp