Non-Circular Couplings
Custom-Engineered Solutions for Complex Infrastructure Geometries
Non-Circular Pipe Couplings deliver custom-engineered connection solutions specifically designed for the complex geometries found in modern and legacy infrastructure systems. Whether connecting elliptical, arch, basket-handle, horseshoe, square, or uniquely shaped profiles, these couplings are custom-fabricated to match actual field dimensions rather than theoretical specifications. Built to handle the irregular stress distributions and pressure differentials inherent in non-circular systems, they provide reliable connections for sanitary sewer, stormwater, and combined systems while accommodating high-velocity flow surges and low-flow transitions.
Each coupling features high-performance EPDM rubber gaskets (Greenbook 211-compliant) with superior tensile strength and elongation properties, paired with 316 stainless steel components for maximum corrosion resistance in challenging environments. Available in multiple widths (6.5", 11", and 20" with custom options), these couplings provide strategic clamp placement that aligns with pressure zones and stress concentrations specific to each pipe geometry. The variable band widths and precisely spaced T-bolt clamps ensure even compression and leak resistance while supporting differential pressures during peak flow events and accommodating controlled flexibility in settlement zones without compromising seal integrity.
Features
- Custom Geometry Fabrication: Designed for any non-circular profile including elliptical, arch, horseshoe, square, and unique cross-sections.
- Multiple Width Options: Available in 6.5", 11", and 20" widths with custom configurations possible.
- Strategic Clamp Placement: T-bolt clamps positioned to address stress zones and pressure differentials specific to pipe geometry.
- High-Performance Materials: EPDM rubber gaskets (Greenbook 211-compliant) with 316 stainless steel components.
- Variable Band Technology: Multiple band widths accommodate irregular pressure distribution in non-circular systems.
- Legacy System Compatibility: Adapts to imperfect, aged pipe conditions including brick, stone, and hand-cast concrete.
- Torque-Rated Hardware: Field-tested clamps rated from 60-180 in-lbs for durable compression.
- Multiple Sealing Surfaces: Wider couplings provide increased sealing area for large-diameter applications.
- Alignment Functionality: Acts as alignment sleeve to simplify jointing and eliminate poured connections.
Shape-Specific Engineering With Specialized Solutions:
Universal Shape Compatibility: Connects any pipe geometry from standard elliptical to unique site-specific profiles.
Enhanced Structural Performance: Handles irregular stress distributions and differential pressures inherent in non-circular systems.
Municipal Approval: City of Los Angeles-approved and tested in complex non-circular sewer and stormwater networks.
Superior Environmental Resistance: Withstands UV exposure, ozone, soil chemicals, and temperature fluctuations.
Installation Efficiency: Eliminates need for field modifications while providing instant alignment capabilities.
Long-Term Reliability: Proven performance in systems over 100 inches with no leaks or failures.
Flexible Application: Compatible with open trench construction and trenchless installation methods.
Cost-Effective Solutions: Reduces reconstruction needs by adapting to existing irregular pipe conditions.
Engineering Compliance: Meets ASTM and Greenbook standards while addressing real-world field challenges.
