The Zurn Wilkins 1-600XL Lead Free 1" Water Pressure Reducing Valve Single Union is a high-quality plumbing product designed to regulate water pressure in a boiler system. Made of durable bronze and brass materials, this threaded valve features a 1-inch interior diameter and is suitable for various plumbing applications. With a weight of 4.25lbs, this single union valve is a reliable choice for maintaining optimal water pressure in your home or commercial setting. Made in China by the reputable brand Zurn Wilkins, this pressure reducing valve offers excellent performance and durability.