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Trane VAL12834 Thermal Expansion Valve 20-Ton R410A

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Special Price $207.57 Regular Price $230.41
In stock
SKU
VAL12834
The Trane VAL12834 Thermal Expansion Valve (TXV) is an essentialpart of your large Trane air conditioning systems While simple on/off valves turn fully on and off, the TXV is an essentialpart of efficient and reliable cooling, particularly in industrial use. A thermal sensor bulb well attached by a capillary tube in the TXV allows the refrigerant flow into the evaporator to be regulated according to the temperature of the evaporator. Made of strong stainless steel, it has a pressure capacity of up to 660 PSI appropriate for business’ use. Mainly, the Trane TXV is installed in air conditioning systems that are 5-ton systems in large commercial structures or industries.
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Thermal Expansion Valves, HVAC Controls & Electrical
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Specifications

  • Actuator Type: Thermal
  • Material: Stainless Steel
  • Capacity: 5-Ton
  • Type: Thermal Expansion Valve
  • Pressure Regulator(PSI): 660 PSI
  • Weight: 0.99 Lbs
Manufacturer Name: Trane
Product Number: VAL12834
OEM Part Number: VAL12834
Product Description: 20 Ton Thermal Expansion Valve
Weight:0.99lbs/449.06g

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Product Questions (2)
Customer Questions
What maintenance is required for the Trane VAL12834 Thermal Expansion Valve?

Regularly inspect the valve for refrigerant leaks, corrosion, or blockages. Ensure the sensing bulb is securely attached and properly insulated. Maintain clean system filters to prevent debris entry. Always depressurize the system and follow safety procedures before servicing.

What are common issues with the Trane VAL12834 Thermal Expansion Valve?

  • Improper refrigerant flow causing inefficient cooling.
  • Valve sticking or failing to open/close properly.
  • Sensing bulb losing charge or poor mounting.
  • Internal blockage due to debris or moisture.

Installation Steps

Step 1: Disconnect power to the HVAC unit and recover the refrigerant.

Step 2: Remove the faulty thermal expansion valve from the liquid line and evaporator connection.

Step 3: Install the new expansion valve, ensuring proper flow direction and secure bulb placement on the suction line.

Step 4: Braze all connections to prevent internal oxidation.

Step 5: Pressure test the system, evacuate to the required vacuum level, and recharge with the correct refrigerant charge.

Step 6: Restore power and verify superheat, subcooling, and overall cooling performance.