Multi Fittings 78332 Expansion Joint Coupling 1-1/2in Pvc

Product Description

The MULTI FITTINGS 78332 is a PVC expansion joint coupling designed to accommodate thermal expansion and contraction in rigid PVC conduit systems. It allows conduit runs to shift longitudinally without stressing fittings, junction boxes, or conductors, reducing the risk of cracking or pull-out at fixed termination points. At 1-1/2 inch trade size, it suits a wide range of commercial and industrial conduit installations. The coupling measures 13 inches in overall travel length and 9 inches in body length, with a width of 2.23 inches, and is constructed entirely of PVC for corrosion resistance in wet, damp, and outdoor-rated locations.

This expansion joint coupling is intended for use in rigid PVC conduit systems where long conduit runs cross building expansion joints or where significant temperature swings are expected. Typical applications include exposed rooftop runs, underground duct banks transitioning to above-grade installations, and large-footprint commercial buildings where conduit spans require movement relief. Licensed electricians install this fitting during conduit rough-in as part of a code-compliant expansion joint assembly.

Key Features

• Accommodates longitudinal movement in rigid PVC conduit runs to prevent stress cracking
• 1-1/2 inch trade size fits standard Schedule 40 and Schedule 80 rigid PVC conduit
• Full PVC construction resists corrosion in wet, damp, and chemically exposed environments
• 13-inch expansion range with 9-inch body length provides generous movement capacity
• 2.23-inch width fits standard conduit layout spacing in trays and exposed runs

Compatibility

Designed for use with 1-1/2 inch trade size rigid PVC conduit systems.

Installation Notes

Installation is performed by a licensed electrician in accordance with NEC Article 352 requirements for PVC conduit expansion fittings. De-energize and lock out all circuits in the conduit before any fitting work. Use appropriate PVC conduit cement and primer on solvent-weld connections per manufacturer and code requirements. Do not over-cement the slip section of the expansion joint, as this can restrict the intended movement range.