ASTM F1970-22 defines special engineered fittings, appurtenances, or valves designed for use in PVC (polyvinyl chloride) or CPVC (chlorinated polyvinyl chloride) pipe and tubing systems. These components are typically molded, fabricated, or assembled from various materials, including rigid thermoplastics, thermoplastic elastomers, elastomerics, and metals.

F1970 PVC fittings are engineered to meet specific dimensional and performance standards, ensuring they provide adequate compressive force, hydrostatic pressure resistance, and leak-proof connections when used with corresponding piping systems. These fittings are intended for distributing pressurized liquids compatible with PVC or CPVC materials, excluding gas service and systems requiring heat fusion welding.

Products covered by this standard include unions, flanges, and valves, which are essential for transitioning between PVC/CPVC systems and metal systems, ensuring a secure and reliable connection.

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