The non-metallic expansion/deflection coupling from T&B Fittings improves safety and reduces installation time for joining rigid polyvinylchloride (PVC) conduit that is subject to movement in any direction at structural joints.
Its design makes the coupling up to five times faster to install, while its versatility enables a five-to-one reduction in stock keeping units (SKUs). The coupling is manufactured in the United States.
“The T&B Fittings Non-Metallic Expansion/Deflection Coupling provides a flexible connection of PVC conduit runs that resists moisture ingress and stress caused by movement at structural joints,” said Chad Smith, vice president, product management and marketing, at Thomas & Betts. “It safely accommodates axial or parallel deflection of up to ¾ in., and angular deflection up to 30° from the relaxed position. It can be used indoors or outdoors, for direct burial or embedded in concrete.”
The coupling complies with 2014 National Electric Code (NEC) Article 300.4(H) for use where a raceway crosses a structural joint intended for expansion, contraction or deflection in buildings, bridges, parking garages, piers, hospitals, and water and waste water treatment plants. Additional features include a flexible neoprene outer jacket with tamperproof stainless steel straps for resistance to moisture and corrosion, and an inner sleeve to provide a constant and smooth inner diameter in any position to facilitate wire pulling and prevent damage to wire insulation.
Thomas & Betts (T&B)