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Lennox 64W51 Thermal Expansion Valve

Special Price $118.32 Regular Price $136.07
In stock
SKU
64W51
Lennox 64W51 Thermal Expansion Valve is an advanced brass valve that regulates the refrigerant passing through HVAC systems. This valve has a pressure rating of 95+2 PSI and has a capacity of 8 tons it allows the smooth control of refrigerant for better heat exchange and cooling. Found in many of the big Lennox split AC and refrigeration systems, it helps to maintain temperature stability and protects the system from overloading, thus increasing equipment durability. With modulation of refrigerant flow being determined by temperature, the valve saves on energy consumption, enhances cooling effectiveness and lowers costs for commercial HVAC systems.
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Specifications

  • Measure: Unit
  • Weight: 0.93lbs
  • Length: 4 Inch
  • Width: 4 Inch
  • Height: 3 Inch
  • Pressure Rating: 95+2 PSI
  • Material: Brass
  • Capacity: 8 tons
Manufacturer Name: Lennox
Product Number: 64W51
OEM Part Number: 64W51
Product Description: Thermal Expansion Valve(Txv) Valve
Weight:0.93lbs/421.84g

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Customer Questions
What maintenance is required for the Lennox 64W51 Thermal Expansion Valve?

Inspect the valve regularly for leaks, corrosion, or debris buildup. Ensure connections are tight and the valve operates smoothly. Cleaning or gently flushing the system can prevent clogs and maintain efficient refrigerant flow. Handle carefully to avoid damage.

What are common issues with the Lennox 64W51 Thermal Expansion Valve?

  • Refrigerant flow restrictions.
  • Leaks at valve connections.
  • Improper superheat causing cooling inefficiency.
  • Sticking or sluggish valve movement.

Installation Steps

Step 1: Turn off power, recover refrigerant for safety.

Step 2: Remove access panel and disconnect old valve and sensing bulb carefully.

Step 3: Install new valve, secure fittings, and position sensing bulb properly on suction line.

Step 4: Braze connections, evacuate system, and recharge with correct refrigerant.

Step 5: Restore power, test pressures, and verify stable cooling operation.