Does Sunlight (UV) affect PVC pipe and fittings?
PVC Fittings and Pipes are generally subterranean Irrigation Supplies (they are generally used below ground). On occasion however, these Landscape supplies will be laid above ground. In these cases it is important to know of the adverse affect sunlight (UV) can have on PVC pipe and fittings. PVC pipes and PVC fittings exposed to sunlight for periods of two years or longer will experience decreases in impact strength and resistance. This is not a major problem when dealing with PVC pipes and fittings as impact strength and resistance are not qualities generally associated with PVC. PVC Pipe and Fitting exposure to UV sunlight for periods of two years or less will not have any effect on the PVC’s stiffness, pressure capacity, strength, or modulus. For periods longer then two years however, there can be minimal effects to these qualities. Generally, the thinner the pipe, the more the UV rays will affect the pipe’s strength or flexibility. Indications of UV exposure on the PVC Pipe or PVC
