Trane VAL9929 Valve 318172-701 Built with a rugged glass-filled

Built with a rugged glass-filled nylon housing and a durable neoprene rolling diaphragm

Field technicians should verify the blocked outlet sensor pressure settings against the appliance's data plate to ensure precise boiler performance

The rugged design includes an LED diagnostic indicator for real-time troubleshooting of airflow faults

As the direct OEM-spec replacement for P108100A and A0408B2772

Standard 24V AC Operation: Compatible with most standard HVAC transformers and control circuits used in the field

Trane VAL9929 Valve 318172-701 Built with a rugged glass-filledThe Trane VAL09929 Electronic Expansion Valve (EEV) is a critical HVAC OEM replacement part engineered for precise refrigerant flow control in high efficiency cooling systems. Unlike traditional mechanical TXVs that rely on sensing bulbs, this stepper motor driven EEV utilizes digital signals from the system controller to modulate the needle valve position. This allows for superior superheat management across varying load conditions, making it a