PVC schedule 40 pipe and pressure fittings are used in irrigation, underground sprinkler systems, swimming pools, outdoor applications and cold water supply lines. These fittings are highly resilient, with high-tensile and high-impact strength. Intended for pressure use where systems will not exceed 140° F. Conforms to meet Standards: ASTM D 1784, ASTM D 2466, NSF 14 and 61PVC Schedule 40. Has better sound deadening qualities than PVC Schedule 40 DWV Foam Core and ABS Foam Core. Installation requires the use of primer and solvent cement. All Charlotte Pipe products are manufactured in the USA.