PVC is the most frequently used thermoplastic for industrial systems. It is economical, weather and corrosion resistant, nontoxic and offers an exceptionally wide range of selection for fittings, piping, valves, and system components. Depending on which chemical will be used (refer to chemical resistance table), PVC has a maximum working temperature of 140ºF. PVC installations can use either threaded connections or solvent welded joints. Due to its high corrosion resistance, PVC is commonly used in applications involving acids, salts, water, alkalis, oil, and many other chemicals.