Polypropylene pipe and fittings can be used for industrial applications involving corrosive media. Polypropylene is the lightest of all thermoplastics. It has good resistance to strong acids except highly active oxidizers, such as nitric acid. Polypropylene also has excellent resistance to weak and strong alkalis and to most organic solvents and is also a non-conductor of electricity. Polypropylene fittings are designed for temperatures up to 140 deg F at 75 PSI. We carry a complete line of injection molded polypropylene fittings, which includes male adapters, female adapters, couplings, elbows, tees, bushings and hose adapters.Maximum continuous use temperature for a material is typically derived from a testing procedure developed by Underwriters Laboratories, In c. The UL temperature index is reported for three different categories: electrical, mechanical with impact, mechanical without impact. The evaluation for each category represents the temperature at which specific properties will decrease to ½ of their original values after 60,000 hours of exposure. These guidelines should not be used as specific limits or used alone to determine suitability for end use. It is impossible to anticipate all factors that can influence the maximum and minimum continuous temperature. Therefore, Green Leaf inc. can make no guarantee of results and can assume no liability in cfonnection with the use of this information. Confirmation of the validity of this information and the suitability of the products for any specific end use should be attained independently