Is an external equalizer line required for the EFJ-1/4-C

and Dunkirk Empire II Series II boilers

While optimized for natural gas

and battery-powered gas-fired appliances

Adjustable Pressure Settings: The pressure reducing valve comes factory set at 12 PSI but is easily field-adjustable to meet specific head pressure requirements

Dwyer Instruments 1823-10 Pressure Switch 320735-701 Is an external equalizer lineFor technicians and contractors requiring reliable airflow monitoring, the Dwyer Instruments 1823 10 Pressure Switch delivers professional grade precision in a compact footprint. This low differential pressure switch is engineered for a range of 2. 0" w. c. to 10" w. c., making it an ideal choice for HVAC mechanical equipment control and industrial process applications. It features a single pole double throw (SPDT) switch configuration, allowing for