CPVC Rod

CPVC (chlorinated polyvinyl chloride) rod is a rigid machining stock engineered for chemical service at temperatures well beyond what standard PVC can handle. The additional chlorination raises the service temperature to roughly 200°F — about 60°F higher than PVC — while preserving the excellent resistance to acids, bases, salts, and oxidizers that makes vinyl the workhorse of chemical processing. CPVC is inherently flame retardant, rated ASTM D635 CC1 and UL 94 V-0 in standard grades, and it will not corrode, scale, or support bacterial growth. Its natural light gray or off-white color distinguishes it from PVC at a glance in the shop.

CPVC rod is specified for machined fittings and valve components, pump and manifold parts, chemical processing and plating equipment, hot water and industrial fluid handling, tank and scrubber internals, semiconductor wet-bench fixtures, and any machined part running hot corrosive service where metals fail and PVC softens. It machines cleanly on standard lathes and mills with sharp tooling and moderate speeds, taps and threads well, and solvent-welds with CPVC-specific cement for permanent chemically resistant joints. Two limits are worth knowing: CPVC is more brittle than PVC, especially below freezing, so it is a poor choice for impact-loaded or cold-service parts, and it is not UV stable — outdoor installations need paint or shielding. CPVC costs more than PVC and is worth specifying when the temperature or flame rating demands it.