This valve is a reliable and efficient solution for controlling the flow of fluids in HVAC systems. With a 1/2" unangled design, it is easy to install and maintain. The normally open configuration ensures that the valve remains open in the absence of power, providing an added layer of safety. With a 1.8CV rating, it can handle high flow rates with ease, while the 3-6# pressure range makes it suitable for a wide range of applications. Made from high-quality brass materials, this valve is built to last and withstand harsh operating conditions.