This particular HVAC valve is designed with a 1/2 inch unangled normally open configuration, with a pressure range of 4-8 pounds and an equal percentage flow characteristic of 1.8cv. Manufactured by Johnson Controls, this valve is built to meet the high standards of HVAC service technicians and is an essential component in any heating or cooling system. Its precise design ensures accurate control of fluid flow, making it an ideal choice for maintaining optimal temperature regulation in any commercial or industrial setting.