this unit features a split-bobbin construction to ensure superior isolation and consistent voltage regulation

Direct OEM Replacement: Guaranteed exact dimensional fit for Carrier

this control is engineered for reliability where maintaining a tight set point is critical for system efficiency

the dial face is specifically calibrated for the pressure-temperature relationships of R-12

Industry Standard Compliance: Fully compliant with ASME B16

Nordyne 664075R Restrictor Orifice 319848-301 this unit features a split-bobbinThe Nordyne 664075R Restrictor Orifice is a precision engineered 0. 075 inch refrigerant metering device designed for exact flow control in residential and light commercial cooling systems. As a genuine OEM #75 restrictor orifice, this component is essential for maintaining the pressure drop required for efficient heat transfer within the evaporator coil. In the field, having the correct HVAC expansion orifice ensures that the system avoids liquid