This pipe meets the standards for NSF 51 Rated, ASTM D.1784, NS14-14, FDA Regulations 175.300, 178.2650, 178.3790, has a length of 8 feet, a maximum operating pressure of 110 psi and is designed for the following applications: air, mineral oil, water. It is clear, has an operating temperature of 140 Degrees F, is made of Excelon. In addition, it has 4½ inch outside diameter, four-inch inside diameter and is Schedule 40, with 0.237 inch wall thickness.