This modulating water valve is designed to regulate the flow of water in HVAC systems. It features a 1/2" NPT connection and uses three wires for precise modulation control. The Trane VAL8106 valve is built with high-quality materials to ensure durability and reliability, making it an ideal choice for HVAC service technicians looking for a long-lasting solution. With its modulating capabilities, this valve can help improve energy efficiency and reduce operating costs in commercial and industrial settings.