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Straight stainless steel clamp coupling four inch socket ends

Zoro Select

Zoro Select HDC400 Heavy-Duty Clamp Coupling Stainless Steel 4 in

SKU CH-FRMV-GRNPF

Stainless-steel clamp coupling connects 4-inch pipes with a straight female socket for 305 psi service

  • Stainless steel construction resists corrosion in demanding environments
  • Heavy-duty clamp coupling handles 305 psi maximum operating pressure
  • 4-inch socket connection fits standard piping systems
  • Straight design allows direct inline installation
  • Extra heavy-duty build ensures reliable performance under stress

Heavy-Duty Clamp Coupling

The Zoro Select HDC400 is a straight stainless steel clamp coupling built for 4-inch pipe connections. It provides a female socket joint on both ends for industrial and plumbing installations. This component suits maintenance teams and system builders who need a durable, corrosion-resistant link in heavy-duty piping networks.

Pressure Rating and Material

The coupling carries a Class 0 psi rating with a maximum operating pressure of 0 psi, indicating a non-pressure or gravity-flow application. Its stainless steel construction resists corrosion and chemical attack in harsh environments. The design contains no moving parts, so it operates silently and draws no power during normal service.

Direct Replacement for Worn Fittings

This part replaces a damaged or leaking 4-inch stainless steel socket coupling in existing straight-run piping. The upgrade is worth it when the original fitting shows corrosion, thread wear, or joint failure that threatens system integrity. It is not for installers who need a reducing coupling, a flanged connection, or a pressure-rated joint above 0 psi.

Highlights

  • Stainless steel construction resists corrosion in demanding environments
  • Heavy-duty clamp coupling handles 305 psi maximum operating pressure
  • 4-inch socket connection fits standard piping systems
  • Straight design allows direct inline installation
  • Extra heavy-duty build ensures reliable performance under stress

Specifications

BrandZORO SELECT

Questions about this item

How do I install the 4 in clamp coupling and what step is commonly missed?

Align the coupling squarely on the pipe, tighten the bolts evenly in a cross pattern to 305 in-lb torque, and verify the gasket seats fully before pressurising.

What maintenance or replacement will the stainless steel clamp coupling need over time?

Inspect the 305 stainless bolts and gasket annually; replace the gasket if it hardens or cracks and retorque bolts after the first thermal cycle.

What is the first limit reached under sustained pressure on this 4 in coupling?

The 0 psi maximum operating pressure rating means the coupling is not rated for pressure service; mechanical joint integrity becomes the limiting factor immediately.

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