Nordyne 664058 Orifice

When you are dialing in a Nordyne or Miller split system, the Nordyne 664058 is the specific .058 restrictor orifice required to maintain precise refrigerant metering. As a veteran in the field, you know that using the wrong flow restrictor #58 results in immediate superheat issues, either flooding the evaporator or starving the coil. This piston-style metering device is engineered for specific tonnage and SEER pairings, ensuring the pressure drop across the liquid line stays within OEM parameters. Fabricated from high-grade brass to resist pitting and debris accumulation, this HVAC orifice plate provides the reliable, fixed-metering performance necessary for systems where a TXV is not utilized. Whether you are performing a seasonal charge adjustment or a full evaporator coil replacement, having the exact .058 expansion orifice on hand prevents the "guessing game" of high subcooling and low suction pressure. Stick with a genuine Nordyne replacement part to ensure the system reaches its rated BTU capacity without compromising the compressor or localized oil return.

Key Benefits:

• Precise Refrigerant Metering: Calibrated to a .058-inch diameter to ensure accurate flow control and optimal superheat.
• OEM Compatibility: Designed specifically for Nordyne and Miller HVAC equipment to maintain factory performance standards.
• High-Durability Construction: Machined from professional-grade materials to withstand high-pressure R-410A or R-22 environments.
• Simplified Serviceability: Easy to inspect or swap during routine maintenance or when troubleshooting metering restrictions.

Common Questions:

• How do I know if the #58 orifice is restricted? If you observe high subcooling at the condenser but high superheat at the evaporator, you likely have a restriction at the orifice plate or the liquid line drier.
• Can I use this orifice for both R-22 and R-410A systems? Compatibility depends on the specific indoor coil and outdoor unit match-up; always verify the required piston size on the outdoor unit’s rating plate.
• What happens if I install a larger orifice by mistake? An oversized orifice will overfeed the evaporator, leading to low superheat and the potential for liquid slugging back to the compressor.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.