Aquaflow 4" x 50 ft potable water discharge hose assembly is an NSF approved drinking water safe lay flat hose. Assembled with a stainless steel male and female camlock with food grade gasket. Stainless steel clamps are used to secure the camlocks to the hose. The cover is made from a blue polyurethane with an NSF polyurethane white tube. It has 2-ply high tensile strength polyester spiral and a temperature range of -40 F to 212 F. Applications for this 4 drinking water lay flat hose include potable water, light water-based chemicals, chlorine, alkalizes, glycols, brine, and ozone. This is an industrial grade potable water lay flat hose.