Anti-Clog Siphonic Roof Drainage Outlet with PE/SS Baffle for Steel Structure Roof Projects

The Vantra Anti-Clog Siphonic Roof Drainage Outlet is manufactured by Guangdong Wanquan and purpose-built for commercial steel structure roof projects. Fitted with a combined PE and stainless steel baffle, this siphonic rainwater drain head delivers stable, blockage-resistant drainage for a wide range of large commercial building roofs.

• High drainage efficiency
• Fewer drainage pipes
• Save space

It is widely specified for shopping malls, exhibition centers, airport terminals, stadiums, commercial logistics hubs and large retail plazas with steel metal roofing. These commercial sites usually feature vast, low-slope steel roofs that face high risks of rainwater ponding during heavy storms. The anti-clog baffle filters leaves, dust and construction debris, stopping foreign matter from entering the HDPE pipeline and cutting unexpected maintenance on busy commercial premises.

Made of high-quality modified PE and rust-proof stainless steel, the outlet withstands long-term outdoor UV exposure and temperature fluctuations common on exposed commercial steel roofs. The integrated sealing flange perfectly matches roof waterproofing layers, effectively eliminating leakage risks that would damage interior commercial spaces and costly decorations.

Its anti-vortex, anti-clog structure quickly forms stable siphon negative pressure to drain rainwater rapidly. Unlike traditional gravity drains, it removes roof water in a short time, protecting commercial buildings from rain overflow and property loss. Bolted installation fits standard steel roof construction workflows and works compatibly with full HDPE siphonic piping systems. Multiple DN sizes are available to meet different rainfall design loads of commercial projects.

We accept OEM and ODM orders. We can produce according to the customer's drawings, and OEM service is available. We can also put your logo on our products. Every product is 100% tested before shipment.

Die casting offers tolerances ranging from +/-0.003" to 0.005" per inch, and even as tight as +/-0.001" depending on customer specifications.

Die cast parts can be produced with smooth or textured surfaces and a variety of paints and plating finishes. Finishes can be chosen to protect from corrosion and improve cosmetic appearance.

We usually charge a relevant sample fee, which is refundable when the order reaches a certain quantity. Samples help ensure our product meets your needs. Sample lead time is usually 2–4 days, and 10–12 days for batch goods.

Our twenty-four-hour service allows you to send information at any time of the day or night. We will reply within 12 hours.

We hold various patents and a hydraulic calculation book. Our design team can make customized products and can also design products according to your description.