Adjustable water pressure control: DN15 1/2 inch reducing valve with adjustable differential to maintain system pressure and minimize operating noise for consistent performance. Builtin filtration system: Integrated filter prevents impurities from entering the water system, helping avoid clogs and maintaining clean water flow throughout the home. Automatic water replenishment: The valve opens when water pressure drops to refill the system and closes once balance is achieved, ensuring efficient operation without manual intervention. Long lasting copper construction: Made from copper with increased wall thickness to withstand continuous use and resist erosion, providing reliable performance for heating and cooling systems. Specifications and compatibility: Fits 1/2 inch nominal pipe sizes (DN15); suitable for heating and cooling system connections; designed for durable, long term operation in demanding environments. Applications and use scenarios: Residential heating systems: Connects to boiler and radiator loops to maintain stable pressure and clean water flow, reducing maintenance needs. Radiant floor heating: Supports consistent flow and filtration to protect the loop and pump, helping sustain even temperatures. Small HVAC or domestic water systems: Use in compact cooling or domestic supply lines to keep pressure balanced and impurities filtered without manual intervention.