Anti-Vortex Baffle Siphonic Roof Drain and PE Stainless Steel Roof Rainwater Outlet for Large Steel Workshop Roof Drainage
Anti-Vortex Baffle Siphonic Roof Drain
,PE Stainless Steel Roof Rainwater Outlet
,Large Steel Workshop Siphon Drainage Funnel
Our Vantra anti-vortex siphonic roof rainwater drain outlets are professionally manufactured by Guangdong Wanquan, a reliable manufacturer specializing in siphonic drainage solutions. Built for large steel workshop and industrial steel-structure roof drainage systems, this siphon rain head delivers stable, high-efficiency roof drainage under heavy rainfall.
| Bucket Diameter DN (mm) | Gravity Drainage System Discharge Volume (L/S) | Maximum Discharge Volume of Siphonic Drainage System (L/S) |
|---|---|---|
| 63 | 3.5 | 10.0 |
| 75 | 5.5 | 15.0 |
| 90 | 8.2 | 30.0 |
| 110 | 11.7 | 48.0 |
| 125 | 19 | 80.0 |
We select high-quality modified HDPE and food-grade stainless steel for the baffle, flange and sealing components. All raw materials are inspected before production to guarantee corrosion resistance, UV stability and long service life outdoors. The one-piece injection moulded PE body features outstanding toughness and crack resistance; the stainless steel parts are polished precisely for excellent waterproof performance and rust prevention. Every finished drain outlet goes through watertightness testing, flow simulation inspection and dimension checking before delivery, to eliminate leakage and construction risks for your project.
The specially designed anti-vortex baffle suppresses air ingress effectively, maintaining stable siphon effect during rainfall. It avoids vortex formation, ensures continuous high water flow capacity, and prevents debris from entering the siphon pipeline to reduce clogging risk. Perfectly matched with HDPE siphon drainage piping systems, it supports fast roof water discharge for large-area steel roofs.
Custom engineered for steel roof panels of factories, warehouses and large industrial workshops. It fits seamlessly with roof waterproofing layers, equipped with reliable sealing gaskets to prevent roof seepage at the installation joint. Simple bolt-on assembly reduces on-site construction time. Available in standard DN sizes for different project flow requirements.
Based in Guangdong, China, Guangdong Wanquan is an experienced manufacturer of siphonic roof drainage products. We focus on siphon rainwater outlets, drainage fittings and supporting accessories for decades. We support OEM & ODM, provide technical drawing support, on-site installation guidance and responsive after-sales service for global engineering contractors and distributors.
Choose Vantra siphonic roof drains from Guangdong Wanquan — durable, well-tested, high-performance drainage solutions for your industrial steel-structure roof projects.
The pipes are made from 100% new material with excellent corrosion resistance. They can withstand a variety of chemical erosion and electrochemical corrosion. Under normal working conditions, they can be used for more than 50 years.
We accept OEM & ODM orders as per the customer's drawing, and OEM service is available. We can also put your logo on our products. 100% testing is carried out 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. This ensures our product meets your needs. Sample lead time is usually 2–4 days, and 10–12 days for batch goods.
We offer all-weather, twenty-four-hour service that allows you to send information at any time of the day or night. We will reply to you within 12 hours.
We have our own various patents and hydraulic calculation book. We have a design team to make customized products, and we can also design products as per your description.
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