Clear vinyl tubing is made from FDA Listed safe materials and are Phthalate free. Applications include: air conditioning drainage, refrigeration drainage, high efficiency furnace drainage, air lines, beverage dispensing units, ice making machines, water distillation lines, deionized water systems, transfer of weak chemicals, tubing for laboratories, printing press equipment and bottling plants. NOTE: working pressure decreases as temperature increases. Pressure ratings can only be obtained with proper coupling procedures. Use of compression fittings with non reinforced PVC tubing is NOT recommended. Hose claims involving use of these fittings will be disallowed.