Designed for underfloor heating systems, this manifold valve core features a high-position shut-off structure and an automatic spring mechanism. It facilitates precise water flow and temperature regulation, enhancing the efficiency of your heating system. The Long-lasting materials and meticulous design ensure reliable performance, catering to the needs of both residential and commercial installations. Features -Color:Golden -Material:Copper, iron -Size: 5.50X3.00X3.00cm/2.16X1.18X1.18in -Thread part: G1/2 and G3/4 -Handle part thread: G1/2 and M30 x 1.5 -Handle post diameter: 4 mm. -Recommended tube diameter: 40.8 mm. -Stable operation: the high position structure design effectively prevents water backflow, ensuring the stability of the underfloor heating system -Accurate water flow control: the shutoff spring valve core allows for precise control of water flow, improving the accuracy and efficiency of temperature regulation -Easy to use: reset feature simplifies the operation process, making it easy to quickly the underfloor heating system -Broad compatibility: suitable for various underfloor heating systems, providing stable heat distribution for both residential and commercial spaces -Reliable and durable: precision manufacturing reduces maintenance needs, ensuring longterm excellent performance and extending the system's lifespan Package list: 1 x Spring valve core