Nylon fittings are generally acceptable for working pressures up to 150 PSI at normal room temperatures. At very low pressures, temperatures can approach 175°F with no degradation of the fitting’s strength.
Nylon has good resistance to a broad range of chemicals including most agricultural chemicals, ammonium compounds, detergents, diesel fuel, ethanol, gasoline, hexane, magnesium sulfate, most sodium compounds, trichloroethylene, and zinc sulfate.
Nylon fittings should not be used with acid based fertilizers, bromine, chlorine, fluorine, hydrochloric acid, sulfuric acid, or xylene.
Not to be used with compressed gases.