Nordyne 664061R Orifice

The Nordyne 664061R Orifice is a high-precision refrigerant metering device engineered for specific air conditioning and heat pump applications. With a fixed diameter of .061 inches, this #61 restrictor orifice is critical for maintaining the correct pressure drop across the evaporator coil, ensuring the thermodynamic cycle remains efficient. In the field, selecting the exact OEM Nordyne part is necessary to prevent flash gas issues or liquid slugging that can occur with Improperly sized components. This refrigerant flow restrictor is typically utilized in 2.5-ton systems, though a technician must verify the specific indoor/outdoor match-up requirements. Its durable brass construction provides a reliable seal and consistent performance under high-pressure conditions. Utilizing this genuine Nordyne 664061R ensures that the system meets the original design specifications for superheat and subcooling, optimizing capacity and protecting the compressor from premature failure during extreme temperature demands.

• Precise Flow Control: The .061-inch aperture ensures exact refrigerant metering for stable evaporator saturation temperatures.
• System Compatibility: Designed specifically for Nordyne, Miller, and Intertherm furnace and AC units to maintain factory performance standards.
• Robust Construction: Machined from high-grade materials to resist corrosion and withstand standard operating pressures in R-410A or R-22 systems.
• Simplified Installation: Standardised fitting allows for direct replacement within the liquid line distributor assembly.

Is the 664061R compatible with all 2.5-ton Nordyne units?
While commonly used in 2.5-ton configurations, orifice sizing depends on the SEER rating and the specific coil-condenser match-up. Always refer to the outdoor unit’s rating plate or charging chart.

Can I use an aftermarket orifice instead of the 664061R?
It is not recommended. OEM Nordyne orifices are calibrated for specific flow coefficients. An off-size or lower-quality restrictor can cause improper cooling or compressor damage.

Does this orifice include the Teflon ring or seal?
This part number typically refers to the brass orifice itself. It is a professional best practice to inspect your existing piston housing and replace any worn seals during service.

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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.