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Nordyne 669822R 4-Ton Thermal Expansion Valve (TXV) R-410A

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Special Price $108.28 Regular Price $124.52
In stock
SKU
669822R
The Nordyne 669822R 4-Ton Thermal Expansion Valve (TXV) which is used in HVAC systems which uses R-410A refrigerant. A TXV is a essential part of HVAC systems it controls the amount of refrigerant that gets into the evaporator coil. It works through measuring the leaves temperature and pressure of the refrigerant and varies the opening of the value with it. This is particularly essential with R-410A systems this refrigerant works at higher pressures than the earlier refrigerants such as R-22.
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HVAC Controls & Electrical, Valves
Manufacturer:
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Specifications

  • Type: Thermal Expansion Valve (TXV)
  • Capacity: 4-Ton
  • Refrigerant: R-410A
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Product Questions (2)
Customer Questions
What maintenance is required for the Nordyne 669822R Thermal Expansion Valve?

Regularly inspect the valve and connections for refrigerant leaks or debris. Ensure proper insulation and verify superheat settings. Clean any buildup around the valve for accurate operation. Proper maintenance ensures efficient refrigerant flow and system performance.

What are common issues with the Nordyne 669822R Thermal Expansion Valve?

  • Improper refrigerant flow causing inefficient cooling.
  • Valve sticking or failing to modulate.
  • Leaks at valve connections.
  • Erratic pressure readings.

Installation Steps

Step 1: Turn off power and recover refrigerant from the system.

Step 2: Remove access panels and disconnect old TXV, noting orientation and sensing bulb location.

Step 3: Braze new TXV into liquid line using nitrogen purge to prevent oxidation.

Step 4: Mount sensing bulb on suction line, insulate properly, and secure tightly.

Step 5: Evacuate system, check for leaks, and recharge with refrigerant to specification.