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Bard part number 5651-038 is an OEM expansion valve used to meter refrigerant flow for proper evaporator feeding and stable cooling performance in Bard wall mounted and packaged HVAC equipment. This valve is supplied with 1/2 inch ODF inlet and 7/8 inch ODF outlet connections and includes a 5 foot capillary tube, making it a direct fit style replacement when you need to correct poor superheat control, icing, or capacity issues tied to a failing metering device. As a genuine Bard replacement part, 5651-038 is built to match factory specifications for fit and operation, but you should always confirm compatibility by model and serial number before ordering since valve sizing and application can vary by unit configuration.