Thermostatic Expansion Valve Kit, May Be Used on Any Indoor Air Handler or Coil That Is Equipped with a Current Thermostatic Expansion Valve with an Internal Check Valve and Mechanical Fittings, This Kit Can Be Used on Split System Heat Pumps and Air Conditioning Systems, Refrigerant:R-22, Non-Bleed TXV, Weight:1 Lbs 8.1oz, Made In USA