ETC 4741 Check Valve 1″ – 4925

The ETC 4741 Check Valve 1" (part number 4925) is a one-inch check valve used in respiratory and gas-delivery systems. It permits flow in one direction and prevents backflow, a critical function in circuits where reverse gas movement could compromise patient safety or system integrity. The valve is commonly found in anesthesia delivery systems, ventilator circuits, and medical gas distribution assemblies.