specifically covering the 250

Tight Shut-off: Designed to meet ANSI Class IV leakage standards for superior system performance

For technicians performing Power Flame burner maintenance

but this OEM part is sized precisely to fit existing mounting points on the 150-436 series housing

Heatcraft Refrigeration 4115D Nozzle 328140-751 specifically covering the 250The Heatcraft Refrigeration 4115D Nozzle is a critical metering component engineered for precise refrigerant distribution in commercial refrigeration systems. Designed as an L 3 4 nozzle, this part facilitates the transition between the expansion valve and the distributor tubes, ensuring a balanced mass flow across the evaporator circuit. The 3 4 inch diameter is optimized to minimize pressure drop while maintaining the necessary velocity for oil