Aluminium Funnel Baffle Siphonic Roof Drain with Stainless Steel Outlet for DN50-DN400 Siphon Drainage Funnel Systems

High-quality Chinese supplier of HDPE siphonic pipe fittings and stainless steel funnels. The Vantra siphonic roof drainage system is engineered for reliable, high-efficiency rainwater removal on industrial and commercial roofs.

• High drainage efficiency
• Fewer drainage pipes
• Save space

The Modern Flexible Siphonic Roof Drain, with an SS outlet and aluminium funnel baffle for factories, is crafted by Guangdong Wanquan as a steadfast rooftop guardian built to stand guard over factory roofs for years on end.

It reports for duty the day it is installed and never calls in sick. Summer brings blazing, unrelenting sunlight, but the drain holds steady. Its stainless steel outlet flange is thick-skinned and resilient; rust and corrosion try to wear it down, yet they can never break its resolve. It breathes the humid, fume-laden air drifting from production workshops and remains unshaken.

Its aluminium funnel baffle is its sharp, vigilant companion. It endures freezing winter chills and sudden downpours, refusing to warp, fade or turn brittle. The sealing gasket at its base is its soft but firm handshake with the roof membrane. Through sweltering heat and frosty nights, it never loosens its grip and will not let water sneak through the seams.

Before it heads out to the construction site, the Guangdong Wanquan team puts it through tough training: salt spray, temperature swings and long ageing trials. Only those who prove they can weather decades of hardship get the green light to go on site.

When storm clouds roll over the factory, the drain springs into action. The aluminium baffle blocks air from rushing into the pipeline, maintaining stable siphon power to carry rainwater away quickly. It also keeps a watchful eye, catching leaves, dust and gravel washed from the roof to stop clogs deep inside the HDPE pipes. While cheaper counterparts tire out, crack or start leaking after a few seasons, this loyal guardian keeps working quietly.

Thanks to its flexible design, it adapts easily, whether it is settling onto a brand-new steel workshop roof or fitting into an older renovated factory. It gets along well with common waterproof layers and standard siphon pipelines, with various sizes ready for different project requirements.

It does not make noise or seek praise. It simply stays up there, day and night, rain or shine. If you need a reliable rooftop sentinel that stays on duty for your factory for years, choose this siphonic roof drain from Guangdong Wanquan.

The pipes are made from 100% new material. They offer excellent corrosion resistance and can withstand a variety of chemical and electrochemical corrosion. Under normal working conditions, they can be used for more than 50 years.

We accept OEM and ODM orders. We can produce according to the customer's drawing, and OEM service is available. We can also put your logo on our products. Every product undergoes 100% testing 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 paint and plating finishes. Finishes can be chosen to protect against corrosion and improve cosmetic appearance.

We usually charge a relevant sample fee. The sample fee 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. We have a design team to make customized products, and we can also design products according to your description.