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Liebert 128158P2S 1/2X5/8X1/4Odf Thermal Expansion Valve(Txv) Valve

Special Price $226.62 Regular Price $251.55
In stock
SKU
128158P2S
The Liebert 128158P2S Thermal Expansion Valve 1/2" X 5/8" X 1/4" ODF is used to control refrigerant flow in HVAC systems to achieve accurate cooling & optimum operation of the parts. It has a major role in regulating the quantity of refrigerant to the evaporator depending on thermal load with a temperature-sensitive sensing mechanism. The valve is mounted on the line with open-die-faced connections with the sizes to ensure a fit. It is appropriate in air conditioning, where the distribution maintains a steady temperature and operational efficiency.
Manufacturer:
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Manufacturer Name: Liebert
Product Number: 128158P2S
OEM Part Number: 128158P2S
Product Description: 1/2X5/8X1/4Odf Txv Valve
Weight:1.06lbs/480.81g

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Customer Questions
What maintenance is required for the Liebert 128158P2S Thermal Expansion Valve?

Inspect valve for refrigerant leaks and ensure sensing bulb is securely attached and insulated. Clean external connections and check for clogging or debris affecting flow. Regular maintenance ensures stable superheat control and prevents system inefficiency or compressor strain.

What are common issues with the Liebert 128158P2S Thermal Expansion Valve?

  • Stuck or sticking valve causing improper refrigerant flow.
  • Erratic superheat control.
  • Clogging in orifice or debris blockage.
  • Sensor bulb failure or poor response.
  • Refrigerant underfeeding or overfeeding.
  • Fluctuating pressure control.

Installation Steps

Step 1: Turn off power and recover refrigerant safely using better equipment properly.

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

Step 3: Braze new valve into refrigerant line with nitrogen purge during brazing.

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

Step 5: Evacuate system, leak test, and recharge to spec properly.

Step 6: Restore power and check superheat and cooling performance properly.