High-Performance Overflow Screen for Rainwater Harvesting & Drainage Systems
Managing stormwater and optimizing rainwater recycling requires absolute security at every outlet. Our engineered Overflow Screen provides the ultimate dual-functionality: maintaining unobstructed rapid overflow discharge during torrential rains, while creating an impenetrable, biosensitive shield against external contaminants, vector pests, and organic debris. Widely adopted by global drainage engineers and water tank manufacturers, this components guarantees system compliance with public health and eco-building regulations.
Why Global B2B Buyers Trust Our Overflow Filter Screens
- Vector and Pest Protection: 1mm aperture fine mesh prevents mosquitoes, frogs, and rodents from breeding inside the water supply.
- Premium Anti-Corrosion Materials: Crafted from marine-grade SUS 314/316 or UV-stabilized heavy polymers to survive harsh outdoor environments.
- Zero Head Loss Design: Engineered angled flow geometry ensures that maximum overflow capacity is achieved without creating backpressure.
- Universal Compatibility: Seamlessly retrofits into standard PVC, HDPE, steel water tanks, and concrete underground stormwater basins.
Key Application Fields
Our overflow screens are extremely versatile and can be directly integrated into various systems, including but not limited to:
- Commercial & Residential Rainwater Tanks: Installed directly onto the upper overflow port of the tanks to ensure clean, pest-free water reserves.
- Urban Stormwater Drainage Networks: Prevents external street rubbish from washing backward into the subterranean storage chambers during flood surges.
- Industrial Retention Ponds & Cisterns: Acts as a primary filtration layer to skim floating waste while allowing clean surface water to run off safely.
- Agricultural Irrigation Reservoirs: Protects high-value automated valves downstream from clogging due to airborne organic debris.
Technical Specifications
| Model Code | Nominal Diameter (mm) | Mesh Material | Frame Material | Max Flow Rate (L/s) | Connection Standard |
|---|---|---|---|---|---|
| OS-RWH-050 | DN50 (2″) | Stainless Steel 304 | UV-Stabilized HDPE | 5.2 | Push-fit / Slip-on |
| OS-RWH-100 | DN100 (4″) | Stainless Steel 304 | UV-Stabilized HDPE | 18.5 | Push-fit / Threaded |
| OS-RWH-150 | DN150 (6″) | Stainless Steel 316 | Anodized Aluminum | 42.0 | Flanged / Bolt-on |
| OS-RWH-200 | DN200 (8″) | Stainless Steel 316 | Stainless Steel 304 | 75.0 | Flanged ANSI/DIN |
| OS-RWH-300 | DN300 (12″) | Stainless Steel 316 | Stainless Steel 304 | 160.0 | Custom Flanged Bolt Pattern |
B2B Supply Chain & Logistics Advantages
- Space-Saving Packing: Our specialized conical and modular screen designs allow nested packing, reducing overseas shipping volumes and container costs by up to 35%.
- Rapid Lead Times: With an automated production line dedicated to standard DN100 and DN150 drainage screens, we maintain a rolling inventory of over 10,000 units for instant dispatch.
- Custom Branding: We offer laser-etched OEM logos directly on the stainless steel frames or custom labels on the packaging boxes for global building material distributors.
Frequently Asked Questions (FAQ)
Q1: Does the overflow screen restrict the drainage rate during heavy storms?
A1: No. The screen structure is specifically engineered with an open surface area ratio exceeding 85%. It allows maximum hydrodynamic flow capacity equivalent to an open pipe, ensuring your rainwater tanks or drainage infrastructure will not suffer back-ups during heavy rainfall events.
Q2: What is the maintenance cycle for these screens in stormwater applications?
A2: Due to the high-grade finish of our stainless steel mesh, organic matter tends to slide off during dry periods. However, we recommend a simple visual inspection every 6 months or after severe seasonal storms. Cleaning requires only a quick rinse with a standard water hose.
Q3: Can these screens withstand sub-zero freeze-thaw cycles or extreme desert heat?
A3: Yes. For extreme temperatures, we recommend choosing our full Stainless Steel 316 model, which maintains structural integrity from -40°C to +80°C. Our polymer frames also contain high levels of UV stabilizers to prevent embrittlement under intense tropical sunlight.
Q4: Do you provide free technical samples for large-scale municipal infrastructure bidding?
A4: Yes, we fully support qualified engineering firms and global distributors. Standard size samples can be dispatched within 3-5 days. For custom size engineering drawings, our CAD department can draft and produce prototypes for verification upon request.
Get Custom Overflow Screen for Rainwater Harvesting Technical Layouts & Factory Estimates
Contact our B2B export engineering department today to receive an itemized wholesale pricing catalog, detailed engineering blueprints, and a complete physical sample box delivered directly to your corporate headquarters!
