Features of the -131 model: This product is a straight stainless steel water hammer eliminator. The appearance design complies with industry standards. It is manufactured using precision technology, providing a smooth surface finish while ensuring durability and a long service life. Professional specification design: Features a 1/2-inch male pipe thread (MIP) connection for quick and secure installation. Compatible with various standard plumbing systems, effectively reducing water hammer noise and promoting smooth pipeline operation. Flexible installation options: Supports multi-directional installation. No requirement for a specific orientation, allowing flexible placement based on actual pipeline layout, simplifying installation and saving time. High-performance temperature and pressure resistance: Maximum working temperature of 250 degrees Fahrenheit and maximum working pressure of 250 PSIG, ensuring reliable performance in a wide range of environments, suitable for demanding industrial and residential applications. Safety and lead-free certification: Constructed from lead-free copper materials, compliant with U.S. safety standards for plumbing applications. Safe for use in potable water systems. Color: Silver & Gold Material: Copper Package Contents: 2 x Water Hammer Arrester Note: The package includes only the items listed above. Other accessories or products are not included. Note: Lighting effects and differences in display screens may cause slight variations in color representation. Measurement may vary by +/- 1-3 cm.