(067B4009) Valve Body for Exp. Valve

• Customization: Available
• Transport Package: Carton
• Specification: CE SGS
• Model NO.: 067B4009
• Trademark: TE5/TE55 Series
• Origin: China/Europe
• HS Code: 8414301990
• Production Capacity: 5000PCS/Year
• Package Size: 35.00cm * 40.00cm * 20.00cm
• Package Gross Weight: 10.000kg

Product Description

Thermostatic Expansion Valves Te5series (067B4009)

Thermostatic Expansion Valves (067B4009)

Thermostatic expansion valve regulate the flow of refrigerant liquid into The evaporator.

The flow is controlled by the valve is thermal bulb which is Attached to the suction line at the outlet of the evaporator.

The thermal Bulb senses the evaporator heat and adjusts the valve to admit refrigerant Liquid in accordance with the refrigerating load.
**Function and Operation of Thermostatic Expansion Valves in Refrigeration Systems**  

The thermostatic expansion valve (TXV) is a critical component in refrigeration and air conditioning systems, designed to precisely regulate the flow of refrigerant liquid into the evaporator. By controlling the refrigerant supply based on the cooling demand, the TXV ensures optimal system efficiency and prevents issues such as flooding or starving of the evaporator.  

### **How the Thermostatic Expansion Valve Works**  
The TXV operates based on temperature and pressure feedback from the evaporator outlet. Its key components include:  

1. **Thermal Bulb (Sensing Bulb)** - Filled with a charge (usually the same refrigerant as the system or a gas with similar properties), the thermal bulb is clamped to the suction line at the evaporator outlet. It senses the temperature of the refrigerant vapor leaving the evaporator.  
2. **Diaphragm & Power Element** - The thermal bulb's pressure is transmitted through a capillary tube to the diaphragm inside the valve. This pressure acts against the evaporator pressure (via an internal equalizer) to modulate the valve opening.  
3. **Adjustable Spring Mechanism** - Provides a counteracting force to fine-tune the superheat setting, ensuring proper refrigerant flow under varying load conditions.  

### **Refrigerant Flow Regulation Process**  
- When the evaporator load increases (higher heat absorption), the refrigerant boils off faster, causing the suction line temperature to rise.  
- The thermal bulb detects this temperature increase, causing its internal pressure to rise and push the diaphragm downward, opening the valve wider to allow more refrigerant into the evaporator.  
- Conversely, if the cooling load decreases, the suction line temperature drops, reducing the bulb pressure. The spring and evaporator pressure then partially close the valve, restricting refrigerant flow.  

### **Benefits of Thermostatic Expansion Valves**  
- **Maintains Optimal Superheat** - Ensures only vapor (not liquid) returns to the compressor, preventing damage.  
- **Improves Efficiency** - Adjusts refrigerant flow dynamically, maximizing evaporator performance under varying loads.  
- **Prevents Flooding & Starvation** - Avoids excess liquid refrigerant (flooding) or insufficient refrigerant (starvation), enhancing system reliability.  

### **Applications**  
TXV valves are widely used in:  
- Commercial refrigeration (supermarkets, cold storage)  
- Air conditioning systems (residential and commercial)  
- Heat pumps and industrial cooling systems  

By continuously adjusting refrigerant flow in response to thermal load, the thermostatic expansion valve plays a vital role in maintaining system efficiency and protecting critical components like the compressor.
 

Valve type	Refrigerant	Pressure (1/4 in/mm)	Capillary tube(mm)	Code no. (without MOP)
TEX5	R22	Ext.	3	067B3250
TEX12	R22	Ext.	3	067B3210
TEX20	R22	Ext.	3	067B3274
TEX55	R22	Ext.	3	067G3205
TES5	R404a	Ext.	3	067B3342
TES12	R404a	Ext.	3	067B3347
TES20	R404a	Ext.	3	067B3352
TES55	R404a	Ext.	3	067G3302