Sporlan 953580 Interface Board 320788-704 making it a staple for

making it a staple for VAV box re-heat

This specific fan blade is designed for Clockwise (CW) rotation when viewed from the discharge side (typically the top of the unit)

This is often used in HVAC to trigger a pump and a heater simultaneously using a single low-voltage signal

Direct OEM Replacement: Seamlessly installs onto existing McDonnell & Miller 150 Series float chambers (Part #173003)

Sporlan 953580 Interface Board 320788-704 making it a staple forThe Sporlan 953580 Interface Board, also known as the IB G Control Board, is the advanced technical successor for the discontinued Sporlan 952956. Developed for precision refrigerant flow management, this HVAC interface module converts 0 10VDC or 4 20mA analog input signals into digital step motor pulses to drive electronic expansion valves. As an all in one replacement, the 953580 consolidates the functionality of previous IB 1, IB 2, IB 3, and IB 6