Features of the -131 model: This product is a straight stainless steel water hammer eliminator. The appearance design complies with standards. It is made through precision technology. It not only has a smooth appearance, but also ensures durability and long service life. Professional specification design: 1 or 2-inch male pipe thread interface (MIP) is used for quick installation. It is suitable for various standards of wastewater pipelines to achieve efficient water hammer noise reduction effects and the smooth operation of the pipeline system. Flexible installation options: This water hammer eliminator supports installation in all directions. There is no need to worry about the installation direction. It can be flexibly set according to the actual pipeline layout, simplifying the installation process and saving time and labor. High performance temperature and pressure resistance: the maximum withstand working temperature reaches 250 degrees Fahrenheit, and the maximum working pressure can reach 250 PSIG, ensuring stable operation in a of environments and meeting the needs of high-standard industrial applications. Safety lead-free certification: All materials used are first lead-free noodles and copper, complying with U.S. railway safety standards, safety and when installed in railway systems. Colour:Silver and Gold Material:copper Package Contents: 2 x Water Hammer Arrester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.