Calbond PVC coated conduit and conduit fittings are designed and manufactured to high quality standards and are fully compliant to UL6, NEMA RN-1 and ANSI C80.1 standards. In extremely corrosive environments – such as those in wastewater treatment plants where the PVC may accidentally get breached or compromised – it is critical to have the additional protection of PVC coating over the underlying zinc.
A wastewater treatment plant is a complex, sophisticated system that includes many conduit installations throughout. PVC coated conduit is able to withstand a wide range of corrosive conditions. All Calbond fittings incorporate flexible overlapping sleeves, ensuring a tight seal at every connection. When using PVC coated conduit with ordinary galvanized channel strut and clamps, the channel becomes more susceptible to corrosion than the electrical raceway system, thus compromising the integrity of the entire support and increasing risk of damage. For this reason, it is strongly recommended to remain consistent with a complete PVC coated conduit system, including strut and accessories. The corrosion-resistant properties of the channel and strut accessories are just as important as that of the conduit system itself.
Calbond galvanized channel features 20 mils of PVC coating, which ensures that the conduit support system provides maximum protection from corrosion. Accessories, such as straps and clamps, are specially designed to be slightly oversized prior to coating, resulting in a snug fit after 20 mils of PVC are applied. These oversized accessories are needed to accommodate the PVC coating as well as the 40 mils of coating on the conduit for proper fit. A full list of channel configurations and accessories can be found in Calbond’s product catalog.
