NBK Parts 21008K Fan Assembly 318423-701 This thermostatic expansion valve (TXV)

This thermostatic expansion valve (TXV) features a 3/8-inch inlet by 1/2-inch outlet configuration

This critical component manages the ignition sequences and timing delays for the indoor fan

The Johnson Controls V-4710-602 is a critical replacement diaphragm engineered specifically for the 8-inch diameter 4R pneumatic actuator series

seized shafts

Designed for heavy-duty HVAC applications

NBK Parts 21008K Fan Assembly 318423-701 This thermostatic expansion valve (TXV)The NBK Parts 21008K Fan Assembly is a 120V 60Hz direct drive ventilation component commonly used in HVACR blower and exhaust systems where reliable airflow and stable motor driven performance are required. Designed for continuous duty operation, this fan assembly is typically installed in OEM air movement equipment, including condensers, air handlers, and exhaust housings that require consistent static pressure handling. The 120V single phase design