Typical Applications Applicable for enteral nutrition feeding by connecting with nasogastric feeding tube. Key Features and Functions; Double-layer co-extruded tubes: the outer-layer is purple, to avoid misconnection with an IV line: the inner-layer is DEHP-free and pigment-free, to improve the material safety and reduce toxicity risk, Specials Design of 5-stepped connector to facilitate© the connection with nasogastric feeding tube, which avoid misconnection with an IV line, Y injection port to facilitate drug administration and tube rinsing.