The Diamondback BV-BB Series BV58BBSI Ball Valve is a high-quality HVAC valve designed for use in heating, ventilation, and air conditioning systems. With a 5/8" outer diameter and insulation sleeve, this valve provides efficient control of fluid flow while maintaining a comfortable temperature for the surrounding area. Made in the United States by Diamondback, this ball valve is a reliable and durable option for various industrial and commercial applications.