Nordyne 664067R Orifice 320819-301 it is designed for use

it is designed for use with both addressable (intelligent) and conventional 4-wire or 2-wire duct smoke detection systems

This pneumatic control valve is typically paired with a 46 or 100 square inch diaphragm actuator to overcome system differential pressures

5 Ton Capacity: Explicitly rated for high-tonnage commercial applications

R410A Optimized: Specifically engineered to handle the higher operating pressures of R410A systems without the risk of diaphragm rupture

The Nordyne 902512 Motor is a heavy-duty

Nordyne 664067R Orifice 320819-301 it is designed for useThe Nordyne 664067R Orifice is a precision engineered . 067 restrictor orifice designed to maintain critical refrigerant flow rates in specific HVAC systems. As the direct replacement for 664067, this #67 orifice is essential for contractors performing maintenance or repairs on Nordyne air conditioner and Miller furnace matching coils. Proper sizing of the metering device is vital for achieving the correct superheat and ensuring the evaporator coil