The PSD5 is a small electronic circuit board that extends the functionality of an external system controller to drive Sporlan GC & FGB Valves. The external controller must provide an analog 0-10 VDC or 4-20 mA signal to the PSD5.
Sporlan Type SBF thermostatic expansion valves are designed for use on Air Conditioning and Refrigeration units. They regulate refrigerant flow by maintaining a nearly constant superheat at the evaporator outlet.