This is an excellent hose for conveying liquids, air and powdered foods. The hose is transparent, allowing for easy inspection during service. Safety Factor : 3:1 Temperature range : -10 to 150° F Construction : Cover : Clear Blue Tint PVC Tube : Clear Blue Tint PVC with Yellow stripe yarn. Reinforcement : Two spiral plies and one longitudinal ply. The working pressure ratings are based on ambient temperature of 70°F and will vary inversely with temperature changes. At 120° F the working pressure will be reduced to 40% of the working pressure at 70° F.