
| Specification | Details |
| Product Name | Hongsen Expansion Valve |
| Model Number | TF404W |
| Valve Type | Thermostatic Expansion Valve |
| Equalization Type | External Equalization |
| Application | HVAC & Refrigeration Systems |
| Function | Refrigerant Flow & Superheat Control |
| Inlet Connection | SAE Connection |
Hongsen TF404W Expansion Valve External Equalization
Product Description
The Hongsen TF404W Expansion Valve is a high-performance thermostatic expansion valve engineered for precise refrigerant flow control in HVAC and refrigeration systems. Designed with external equalization technology, this valve ensures accurate superheat regulation, stable evaporator performance, and improved cooling efficiency in commercial and industrial refrigeration applications.
The TF404W expansion valve automatically adjusts refrigerant flow according to system cooling demand, helping maintain optimal evaporator operation while protecting compressors from liquid refrigerant return. Its external equalization feature provides enhanced performance in systems with pressure drops across the evaporator, resulting in better temperature stability and energy efficiency.
Manufactured using durable brass and high-quality internal components, the Hongsen TF404W offers reliable long-term performance under demanding operating conditions. The compact and robust design allows easy installation and compatibility with a wide range of refrigeration and air conditioning systems.
This expansion valve is ideal for professional HVAC systems requiring accurate refrigerant metering, stable operation, and dependable cooling performance.
Key Features
- Precise refrigerant flow control for efficient cooling performance
- External equalization design for accurate superheat adjustment
- Improves refrigeration system efficiency and temperature stability
- Protects compressors from liquid refrigerant return
- Durable brass body construction for long-lasting reliability
- Suitable for commercial and industrial HVAC systems
- Stable operation under varying load conditions
- Compact design for easy installation and maintenance
- Compatible with multiple refrigeration applications


