This valve is designed for use in HVAC systems and features a 1.25 inch ungrounded body with a high flow capacity of 18.5 CV. It operates as a normally open valve and has an enclosed design that helps to protect it from damage or contamination. The valve is capable of operating within a pressure range of 3-6 pounds, making it suitable for use in a variety of applications. With its reliable performance and durable construction, this valve is an excellent choice for HVAC service technicians looking for a high-quality solution for their customers' needs.