This Belimo electronic pressure independent valve, with a size of 3/4 inches, is designed to provide precise flow control. It has a flow coefficient (cv) of 10.3, which indicates the amount of water in gallons per minute that the valve will pass for a pressure drop across the valve of 1 psi. The valve operates on a non-spring return actuator system (NSR), meaning it stays in its last position during a power loss. The actuator is powered by a 24V modulating control signal, which allows for adjustments and fine-tuning of the valve's position based on the system's needs. This product is engineered to offer high performance and reliability in HVAC applications.