Nordyne 664093R Restrictor 321894-708 it typically interfaces with 2

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

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

Because this is a solid-core sensor

Nordyne 664093R Restrictor 321894-708 it typically interfaces with 2The 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