Schneider Electric (Barber Colman) AV-390 Valve linkage 30067439-890 the orifice must be sized

the orifice must be sized correctly according to the furnace rating plate

an AT150F series model should be used instead

Larger valve bodies typically require a 1/2" stroke kit

If the motor draws less than 4

installing this factory-calibrated HVAC low pressure cutout restores system logic to original performance standards without the need for field adjustments

Schneider Electric (Barber Colman) AV-390 Valve linkage 30067439-890 the orifice must be sizedThe Schneider Electric (Barber Colman) AV 390 Valve linkage is a critical sub assembly designed for field integration of gear train actuators with VB 7XXX and VB 9XXX series valve bodies. This specialized AV 390 common parts kit includes a high precision cam, plunger, and stem extension kit, providing the essential mechanical interface required for effective fluid control in commercial HVACR systems. As a veteran grade valve linkage sub assembly, it