Description
Trane VAL11998 Electronic Expansion Valve (EXV) Overview
The Trane VAL11998 is a factory-engineered Electronic Expansion Valve (EXV) designed to deliver precise, electronically controlled refrigerant metering in commercial HVAC and refrigeration systems. Featuring a 1-1/8″ inlet connection and a 3/4″ outlet connection, this OEM valve is built to Trane’s exacting standards for reliable, long-service performance in demanding applications.
What Is an Electronic Expansion Valve?
Unlike traditional thermostatic expansion valves (TXVs), an Electronic Expansion Valve uses a stepper motor or pulse-driven actuator to modulate refrigerant flow with high accuracy. This allows the system controller to optimize superheat, improve energy efficiency, and respond rapidly to changing load conditions — making EXVs a critical component in modern variable-capacity and inverter-driven systems.
Key Features
- OEM Trane replacement part — engineered for direct compatibility with Trane equipment
- 1-1/8″ inlet x 3/4″ outlet connection sizes for secure, leak-free installation
- Electronic actuation for precise, stepless refrigerant flow control
- Supports optimized superheat management and system efficiency
- Durable construction suited for commercial HVAC and refrigeration environments
- Designed to integrate seamlessly with Trane system controls
Applications
- Trane commercial rooftop units and split systems
- Variable refrigerant flow (VRF) and inverter-driven systems
- Commercial refrigeration circuits requiring precise expansion control
- OEM service and replacement in Trane equipment
Installation Notes
Always refer to the applicable Trane service manual and equipment wiring diagrams before installation. Ensure the system is properly recovered, evacuated, and recharged per EPA 608 regulations. Match the valve’s connection sizes to the existing refrigerant circuit before installation.
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