The Herz TS-90-V thermostatic head, part number 1773426, is a high-quality, genuine Herz component engineered for accurate and reliable temperature regulation in heating systems. This model features a standard M30x1.5 connection thread, ensuring compatibility with a wide range of thermostatic radiator valves. Equipped with a responsive liquid sensor and a convenient zero position for complete shut-off, it allows for efficient and precise control of room temperature, contributing to energy savings. Its robust design ensures long-lasting performance in various heating applications.