The 4-way Reversing Valve is the key component to provide Heating and Cooling by reversing the flow direction of refrigerant. In applications such as heat pumps or reversible air conditioning units and chillers it changes from cooling mode in summer to heating mode in winter. Valves are suitable for all P.E. Directive Group 2 refrigerants and operate under the full pressure of the heat pump system. The ball valve design guarantees minimum pressure drop and very low risk of leakage and ensures quick changeover even without any pressure differential. The cycle inversion needs no solenoid pilot valve and no slider movement, reducing risk of mechanical seizures. The models offer a wide range of connection sizes, configurations and capacity for specific applications. 4-way Reversing Valves are CE approved products.