1 inch Galvanized Iron Threadless Coupling

1" Galvanized Iron Threadless Coupling – Rigid Conduit Compression Fitting

The 1" Galvanized Iron Threadless Coupling is designed for use with 1-inch IPS rigid metal conduit (RMC) or galvanized steel pipe in electrical and mechanical installations. It provides a secure, compression-type connection without threads, allowing for rigid coupling of conduit sections or piping in applications where threading is impractical or not specified.

Constructed from galvanized malleable iron or steel and coated for corrosion resistance, this coupling is suitable for both indoor and outdoor installations. It supports grounding continuity in metallic conduit systems and is used in accordance with NEC Article 344 for rigid conduit applications, as well as in mechanical utility piping where threading is not used.

Performance Attributes

• ✅ Material: Hot-dip galvanized malleable iron or steel, providing corrosion protection and mechanical durability.
• ✅ Connection Type: Compression-style threadless coupling for use with 1" nominal iron pipe size (IPS) conduit or pipe.
• ✅ Application: Used to join two unthreaded sections of RMC or galvanized pipe in electrical or mechanical systems.
• ✅ Code Compliance: Meets applicable standards for threadless conduit fittings under UL 514B or CSA C22.2 as required.
• ✅ Installation: Tightens via set screws or compression rings; requires no threading or sealants.

Common Use Cases

Threadless couplings are utilized in rigid conduit runs for electrical distribution or mechanical piping systems where field threading is not feasible. Common applications include utility service entry, infrastructure conduit transitions, or joining sections of hot-dip galvanized pipe in environmental control or grounding installations.

Installation Considerations

Installers must ensure that pipe or conduit ends are properly deburred and aligned before coupling. Coupling should be torqued according to manufacturer instructions using compression rings or set screws to maintain mechanical and electrical continuity. Threadless fittings are typically used in exposed or accessible locations for ease of maintenance.

Technical Specifications

• Nominal Size: 1 inch IPS
• Fitting Type: Threadless Compression Coupling
• Material: Galvanized Malleable Iron or Galvanized Steel
• Standard Compliance: UL 514B (if electrical), ASTM A197/A153 (for mechanical applications)