The nylon fitting by Green Leaf? including hose, pipe, garden hose and nozzle fittings are manufactured in sizes ranging from 1/8 in to 3 in. Our nylon fittings are both NSF61 and NSF372 certified and are made in the USA. The pressure rating of the nylon fittings is rated at 75 psi at 167 to 32 deg F. Nylon fittings are highly durable and chemical-resistant and offered in a variety of thread and hose shank combinations. Green Leaf's nylon is hydroscopic, which means it must absorb moisture to reach its full strength capabilities and is preferred for a variety of agricultural, plumbing and industrial liquid-handling solutions. Our fittings are chosen by distributors for durability and performance in both cold and hot water applications and are resistant to organic solvents, oils, gasoline, high-impact and high-temperatures.