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Danfoss 067N9531 Thermostatic Expansion Valve R454B

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Special Price $81.46 Regular Price $93.67
Out of stock
SKU
067N9531
The Danfoss 067N9531 Thermostatic Expansion Valve is a refrigeration control valve that is used to control the flow of refrigerant into the evaporator of refrigeration and HVAC systems that are designed to operate with R-454B refrigerant. It provides a sensing diaphragm and bulb to adjust the valve opening depending on the degree of superheat to maintain the optimum refrigerant charge and high heat uptake. It is to load variations, and working conditions. It maintains the evaporator operation and ensures the intended cooling efficiency.
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Product Questions (2)
Customer Questions
What maintenance is required for the Danfoss 067N9531 Thermostatic Expansion Valve?

Inspect the valve periodically for signs of leaks, corrosion, or refrigerant oil residue. Ensure the sensing bulb is firmly attached and properly insulated on the line. Clean debris around the valve area to maintain proper refrigerant flow. Always handle pressurized refrigerant safely and follow system shutdown procedures.

What are common issues with the Danfoss 067N9531 Thermostatic Expansion Valve?

  • Improper refrigerant flow regulation.
  • Valve sticking or sluggish response.
  • Loss of sensing bulb charge.
  • Internal blockage from contaminants.
  • Inconsistent superheat and cooling performance.

Installation Steps

Step 1: Turn off HVAC power and close the refrigerant valves to ensure safety.

Step 2: Remove the existing TXV carefully, avoiding refrigerant leaks.

Step 3: Install the new valve in the correct orientation, securing all connections tightly.

Step 4: Evacuate air from the system and recharge with the proper R454B refrigerant.

Step 5: Restore power and run the system to confirm proper cooling performance and leak-free operation.