Nordyne 664093R Restrictor 321894-708 or visible corrosion on the

or visible corrosion on the burner head that disrupts the flame signal

this thermal expansion valve is the standard professional choice for restoring factory-spec performance

The integrated terminal strip accepts 14-22 AWG wire

it typically interfaces with 2 to 12 VDC or 100 to 1000 ohm signals depending on the specific bridge circuit or controller being used

and high-spec HVAC installations

Nordyne 664093R Restrictor 321894-708 or visible corrosion on theThe Nordyne 664093R Restrictor Orifice is a critical metering component designed for precise refrigerant flow control in HVAC residential split systems and manufactured housing units. With a calibrated . 093 orifice size (identified as #93), this fixed bore metering device ensures the appropriate pressure drop required for efficient evaporation cycles. As the direct replacement for Nordyne 664093, this component maintains system equilibrium and