About This [One-Way Flow Control]: Designed to allow water flow in a single direction, this check valve prevents backflow effectively in residential and commercial plumbing systems. [High-Quality Brass Material]: Crafted from premium brass, ensuring strong resistance and long-lasting durability for reliable performance under 232PSI nominal pressure. [Standard DN20 Female Thread]: Equipped with 3/4 BSP internal female threading, compatible with a wide range of plumbing connections for versatile installation options. [Swing Type Mechanism]: Features a swing valve structure that provides smooth operation and minimal flow resistance, maintaining steady water pressure. [User-Friendly Design]: Includes a clear arrow mark indicating flow direction, making installation quick and easy without guesswork for homeowners and professionals alike. Overview Brand : XZXCVN Item dimensions L x W x H : 2.36 x 1.96 x 1.18 inches Manufacturer : XZXCVN