The KH45LD065 replaces multiple older Carrier part numbers

A failed or tripped 1320547 limit switch often forces the blower into a continuous "on" state as a safety measure to dissipate excess heat

the EF33CW180 offers a direct-fit solution for models like the 58CTA and 312AAV series

and LB-107228T

Johnson Controls VG2231VM292NGGA Valve Assembly 30067439-890 The KH45LD065 replaces multiple olderThe Johnson Controls VG2231VM292NGGA is a heavy duty 4 inch 2 way normally open flanged globe valve designed for precise flow control in demanding hydronic systems. Built with a rugged cast iron body and durable brass trim, this assembly handles high capacity chilled or hot water applications with a 150 Cv rating. The ANSI Class 125 flat faced flange connection ensures a secure fit for industrial piping. Performance is driven by a tandem mount spring