This Resideo valve is a 3/4 inch, short sweat, normally closed (N/C) model with a flow coefficient (Cv) of 3.5. The Cv value indicates the amount of water in gallons per minute (GPM) that can pass through the valve with a pressure drop of one pound per square inch (PSI). This valve is designed to handle a differential pressure of 20 pounds per square inch differential (20#Dif), which refers to the maximum pressure difference that the valve can withstand between its inlet and outlet while still functioning properly. The short sweat (Shrt SWT) designation refers to the type of soldering connection on the valve, which requires less space for installation compared to other types.
