[Premium Brass Construction] Ensures durability and long-lasting performance. [Universal Compatibility] Fits G1/2-inch male thread to G1/2-inch female thread connections. [Compact Design] With overall dimensions of 20.4x29.2mm, it's suitable for various applications. [Prevents Backflow Accidents] Regulates one-way water flow, preventing accidents caused by backflow. Ensure correct installation direction to avoid water blockage. [Wide Application Range] Suitable for water heaters, tanks, towers, toilets, garden hoses, RVs, as well as landscape sprinklers, swimming pools, water parks, aquariums, and more. Material Brass Thread Size G1/2" (Male Thread) to G1/2" (FemaleThread) Overall Size 20.4x29.2mm Type Brass Check Valve Bran.