Key Features
- Chemical & UV Resistant: Weir panels made with high-quality FRP resins provide outstanding durability in submerged conditions.
- Precision Machined Profiles: Weirs are fabricated via pultrusion using precision dies, ensuring uniform cross-sections and exact notch dimensions for consistent flow.
- Long-Length Panels: Available in long continuous lengths (e.g. 6–12 m) to reduce the number of joints and associated leaks.
- Stainless Hardware & Supports: Complete weir kits include SS anchors, washers and brackets to prevent galvanic corrosion and secure the weir in place.
- AWWA/NSF Compliant: Conform to water industry standards (AWWA C950/C501, NSF-61), making them suitable even for potable water clarification.
- Optional Covers: Open-channel weirs can be paired with FRP covers to block sunlight and debris (preventing algae and odors).
Benefits
- Uniform Effluent Flow: Consistent crest height across the clarifier perimeter ensures even sludge blanket levels and optimal solids removal.
- Maintenance-Free Operation: No painting or repair needed; resistant to chips or surface degradation, providing years of trouble-free service.
- Reduced Leakage: Fewer splices means fewer potential leak paths. Long panels and precision fit eliminate water bypass behind the weir.
- Lightweight Handling: A single technician can often carry a weir panel; easy to swap out or expand without cranes.
- Cost Savings: Lower fabrication and replacement costs than stainless steel; no need for periodic lining or replacement due to corrosion.
Applications
- Clarifier Tanks: Primary and secondary clarifiers in wastewater treatment plants and water treatment facilities.
- Settling Basins: Effluent control weirs in any sedimentation or decantation process.
- Filters and Flocculation Basins: Weirs on flocculators or distribution channels needing even flow.
- Skimming Tanks: Square or circular clarifiers used for scum removal; weirs define the skimming water line.
- Retrofits: Upgrading existing concrete or steel weir installations to FRP for long-term performance improvement.
Technical Specifications
- Material: Pultruded fiberglass panels with ≥65% glass content by weight; isophthalic polyester or vinylester resin.
- Thickness: Standard panel thickness 3–8 mm depending on span and support spacing.
- Configurations:
- Straight/Louvered Weirs: Continuous straight edge with or without small perforations.
- V-Notch Weirs: Single or multiple V-shaped notches (usually 60° or 90°) for controlled flow per unit length.
- Circular Weirs: Radial or full-circumference designs for round tanks.
- Mounting: Panels can be mounted in FRP or concrete walls using through-bolts and adjustable brackets; hydraulic seal gaskets recommended at joints.
- Compliance: Fabricated to meet AWWA C950 (fiberglass effluent weirs) and ANSI/AWWA standards; NSF-61 rating optional.
Unique Selling Points (USPs)
- Single-Source Fabrication: We design, mold and fabricate the weir panels and all accessories (connectors, washers, brackets) in-house, ensuring perfect fit and finish.
- Extended Panels: We manufacture weir panels longer than most competitors (up to 12 m), minimizing seams.
- Performance Guarantees: Flow testing of weir kits for accuracy is available; we guarantee capacity and C-factor performance.
- Adaptable Design: Quick-change weir systems (e.g. clip-in panels) for future modifications or cleaning without full tank shutdown.
- Full Clarifier Solution: We offer bundled solutions (launders, weirs, baffles, covers) engineered together, optimizing system performance and simplifying procurement.