VENTLESS PRESSURE SWITCHES ARE ADJUSTABLE PRESSURE SWITCHES FOR AUTOMATIC BURNER CONTROLS.
NEMA 4 ENCLOSURE RATING
SPDT PRESSURE SWITCH REQUIRES NO AUXILIARY POWER. THE GAO IS SUITABLE FOR MAKING AND/OR BREAKING A CIRCUIT WHEN THE SET POINT IS EXCEEDED OR UNDERSHOT. A TRIPPED SWITCH IS INDICATED BY A NEON LIGHT AFTER SET POINT IS EXCEEDED OR UNDERSHOT. AUTOMATIC RESET WHEN PRESSURE RETURNS BELOW OR ABOVE SET POINT. 
ALSO SEE:
- Dungs GMH High Pressure Switch
- Dungs GML High Pressure Switch
- Dungs AA-A2 Differential Pressure Switch