The Herz P9U247 is a genuine Herz 4007 series differential pressure controller, specifically the DN80 PN16 variant. Engineered for precise and constant differential pressure regulation in industrial and commercial heating and cooling systems, this high-quality valve features a robust grey cast iron body (EN-GJL-250), a durable stainless steel stem, and EPDM diaphragm and O-rings. Designed for flanged connections, it operates reliably up to 120 °C and 16 bar, offering an adjustable differential pressure range of 0.2 to 1.0 bar. Its Kvs value of 100 m³/h ensures efficient flow control, making it an essential component for optimal HVAC performance.