Trane ACT0881 Valve 318973-401 The Trane FAN1820 is a

The Trane FAN1820 is a Clockwise (CW) rotation blade

Is this diaphragm compatible with other Spence valve sizes

functioning as a primary high-limit safety to prevent heat exchanger damage and hazardous overheating

Featuring a 3-inch insertion length

Its internal design ensures the upper port remains closed until a control signal is received

Trane ACT0881 Valve 318973-401 The Trane FAN1820 is aThe Trane ACT0881 is a core component for field technicians requiring a reliable 24VAC DC electronic fail safe valve actuator. Designed for direct integration with 1 2 inch and 3 4 inch globe valves, this OEM Trane actuator ensures precise modulating control and automated fluid regulation in demanding HVACR environments. Unlike standard non spring return units, the ACT0881 features an internal fail safe mechanism that automatically returns the valve