4-way valve De Dietrich 7836265

A 4-way valve is a directional control valve used in heating and cooling systems to reverse the flow of refrigerant, enabling both heating and cooling modes in heat pumps. In boiler and burner applications, this valve is critical for systems that provide both functions, allowing seamless switching between cycles. It directs the refrigerant from the compressor to either the indoor or outdoor coil depending on the desired mode. A reliable 4-way valve ensures efficient operation and comfort control. Whether you are repairing a heat pump or installing a new system, this component is essential for proper functionality. It is a common replacement part in multi-season heating equipment.