The Delfield 3516273 Refrigerator Expansion Valve 1/4" X3/8" R404A delivers precise refrigerant metering for dependable commercial refrigeration performance. To regulate the flow of R404A refrigerant into the evaporator, this expansion valve responds to system conditions by controlling refrigerant volume according to cooling demand and evaporator superheat. https://partsfe.com/valve-expansion-for-delfield-part-3516273