| Customization: | Available |
|---|---|
| Transport Package: | Carton |
| Specification: | CE |
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The TEB2 Series (Model 068Z7009) Thermostatic Expansion Valve (TXV) is a precision refrigerant flow control device designed to optimize the performance of refrigeration and air conditioning systems. By dynamically regulating the flow of liquid refrigerant into the evaporator, it ensures efficient heat absorption while preventing liquid refrigerant from returning to the compressor, which could cause damage.
The thermostatic expansion valve operates based on superheat feedback control, ensuring the evaporator receives the correct amount of refrigerant for optimal cooling capacity.
Thermal Bulb & Capillary Tube:
Mounted on the suction line at the evaporator outlet, the thermal bulb contains a temperature-sensitive charge (gas or liquid).
As the evaporator outlet temperature changes, the charge expands or contracts, transmitting pressure through the capillary tube to the valve diaphragm.
Diaphragm & Needle Valve Assembly:
The diaphragm converts thermal bulb pressure into mechanical force, modulating the opening of the needle valve.
Higher superheat (indicating insufficient refrigerant) opens the valve wider, increasing flow.
Lower superheat (indicating excess refrigerant) reduces valve opening to prevent flooding.
Balanced Port Design:
The TEB2-068Z7009 features a pressure-balanced mechanism, ensuring stable operation even under varying condensing pressures.
Accurate Superheat Control: Maintains optimal superheat (typically 4-8°K) for maximum evaporator efficiency.
Wide Refrigerant Compatibility: Suitable for HCFC (R22), HFC (R134a, R404A, R407C), and natural refrigerants (R290, R600a).
High Durability: Robust brass or stainless steel construction resists corrosion in demanding environments.
Load-Adaptive Response: Automatically adjusts refrigerant flow based on real-time cooling demand.
The TEB2-068Z7009 is widely used in:
Commercial Refrigeration (Walk-in coolers, display cases)
HVAC Systems (Air conditioners, heat pumps)
Industrial Chillers & Cold Storage
Transport Refrigeration (Truck & container cooling)
Thermal Bulb Mounting:
Securely clamp the bulb to a clean, straight section of the suction line.
Insulate the bulb to prevent ambient temperature influence.
Valve Orientation: Install in a horizontal position to ensure proper diaphragm movement.
System Charging: Verify correct superheat settings during commissioning.
Unlike capillary tubes or fixed restrictors, the TEB2-068Z7009 TXV:
Dynamically adjusts to load changes, improving energy efficiency.
Prevents liquid refrigerant floodback, protecting the compressor.
Enhances system stability in varying ambient conditions.
The TEB2 Series (068Z7009) Thermostatic Expansion Valve is a high-performance solution for precise refrigerant metering in modern cooling systems. Its responsive design ensures optimal efficiency, reduced energy consumption, and extended equipment lifespan.
For detailed technical specifications, consult the manufacturer's datasheet or contact a certified HVAC/R technician.
| 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 |
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