Chlorinated polyvinyl chloride (CPVC) is created by subjecting PVC resin to a post chlorination reaction that results in additional chlorine atoms on the base molecule. This results in an amorphous thermoplastic material similar to PVC with added advantages: a higher heat distotion temperature and improved fire performance properties at relatively low cost compared to alternate materials As with PVC, the physical properties of CPVC can be alered considerably to provide desirable properties by compounding techniques. Due to its higher heat distortion temperature, Harvel CPVC can be used in piping applications at temperatures up to 60 F higher than PVC piping, having a maximum service temperature for pressure applications of 200 F. Harvel CPVC provides an economic solution for piping utilized in process piping, hot water and similar service applications where operating conditions exceed the recommended temperature limits of PVC. This greatly expands the application ranger for thermoplastic pipe, providing an economical solution for piping used in elevated temperature services.
Harvel utilizes several different CPVC compounds formulated specifically for the production of different CPVC end products. Refer to Physical Properties section, Chemical Resistance Data, and Industry Standards & Test Methods section for additional information. Harvel utilized CPVC materials listed by NSF International to NSF STD 61, toxicology, as being safe for use in potable water applications. The Cell Classification call out for most CPVC piping materials per ASTM D1784 is as follows:
CPVC Cell Classification 23447 = CPVC Type IV, Grade I = Rigis (unplasticized) CPVC = CPVC
Harvel® CPVC Product Line
Schedule 40 & Schedule 80 CPVC Pressure Pipe
CPVC Machining Shapes (solid bar, hollow bar, angle and other machine stock)
Harvel HydroKing™ CTS CPVC Hot and Cold Water Plumbing Pipe
Harvel CPVC Fire Sprinkler Pipe
Although PVC and CPVC are similar in nature they are not the same. Care should be used when investigating chemical resistance, joining/fabrication techniques, and service applications. Harvel utilizes several different PVC and CPVC compounds for the production of different product lines. Different compounds may exhibit slight variations in actual physical properties and resultant cell classifications as compare to those stated. Contact Harvel Tech Services for additional information if necessary.
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