Concrete couplings (Victaulic)

Construction & Materials

• Housing: High-strength ductile iron (ASTM A536) for superior load-bearing capacity and impact resistance.

• Gasket: Pressure-responsive elastomer seal available in a variety of compounds (EPDM, nitrile, etc.) to suit potable water, HVAC, wastewater, and industrial service conditions.

• Coating: Corrosion-resistant epoxy or galvanized finishes to protect against concrete alkalinity and environmental exposure.

• Fasteners: High-tensile galvanized or stainless-steel bolts and nuts to ensure long-term joint integrity.

Engineering Performance
Victaulic concrete couplings are designed to maintain alignment and sealing integrity when encased in poured concrete. The grooved connection method permits controlled angular deflection and limited linear movement, mitigating the effects of thermal expansion, contraction, and seismic activity. Pressure ratings typically match the pipe system’s working pressure, often up to and exceeding 300 psi (20 bar), depending on coupling size and gasket selection.

Installation Advantages
Unlike welded or flanged joints, Victaulic couplings can be installed rapidly using simple hand tools, reducing on-site labor and eliminating the hazards associated with hot work in confined spaces. The coupling’s two-piece housing can be positioned around the pipe groove and secured in minutes, streamlining installation even in congested reinforcement layouts.

Applications
Victaulic concrete couplings are widely used in:

• Chilled water and condenser water loops passing through building cores

• Potable and non-potable water lines embedded in foundations or slabs

• Fire protection risers transitioning through concrete floors

• Industrial process piping cast within structural elements

• Wastewater and stormwater drainage systems in civil infrastructure projects

Key Technical Benefits

• Leak-tight Performance: Gasket compression creates a positive seal under both positive and negative pressures.

• Vibration Dampening: Flexible joint design absorbs mechanical vibration, reducing stress on connected equipment.

• Load Distribution: Housing transfers tensile, torsional, and shear loads efficiently through embedded concrete.

• Maintenance Access: Allows for disassembly and pipe replacement without concrete demolition, when installed with accessible spool sections.

By integrating robust mechanical performance with the ease of grooved system installation, Victaulic concrete couplings deliver long-term reliability for embedded piping applications. Their engineered design ensures system safety, reduces installation costs, and minimizes lifecycle maintenance requirements—making them a preferred choice for engineers and contractors worldwide.