This floor heating manifold valve core is designed with a high-position structure and an automatic spring mechanism. It ensures efficient water distribution and temperature regulation in underfloor heating systems. The Long-lasting construction and precise engineering make it a reliable choice for maintaining optimal heating performance in residential and commercial spaces. 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. -High position design: effectively prevents back-flow, ensuring the stable operation of the underfloor heating system -Shut-off spring valve core: precisely controls water flow, enhancing the accuracy and efficiency of temperature regulation in underfloor heating -Automatic reset function: simplifies the operation process, allowing for quick of the underfloor heating system -Versatile application: suitable for various underfloor heating systems, providing stable heat distribution for both residential and commercial spaces -Precision manufacturing: reduces maintenance needs, maintaining excellent performance over long-term use and extending the lifespan of the underfloor heating system Package list: 1 x Spring valve core