Maxitrol 220D-1 1/4 Regulator 30067439-890 The Trane TRR0664 Transformer is

The Trane TRR0664 Transformer is a heavy-duty 350VA industrial control transformer specifically engineered for high-demand commercial HVACR applications

Operational Reliability: Minimizes the risk of solenoid humming or slow closing times by replacing worn internal moving parts

Precise Superheat Control: Features an external equalizer to compensate for pressure drops through the evaporator coil

Direct Drop-In Compatibility: Engineered to replace 921047 and ZR29KC-PFV-930 units without extensive piping re-work

Maxitrol 220D-1 1/4 Regulator 30067439-890 The Trane TRR0664 Transformer isThe Maxitrol 220D 1 1 4 is a high performance servo operated gas pressure regulator designed specifically for commercial and industrial applications where precise pressure control is non negotiable. Featuring a 1 1 4" NPT connection, this pilot loaded regulator handles a maximum inlet pressure of 10 PSI, effectively reducing it to a stable 1 3 PSI outlet pressure range. Unlike standard direct acting models, the 220D series utilizes a specialized