China Syphon Roof Drainage Outlet

Several outlet drains can be connected to a single collector pipe. This means that the pipe can be laid without fall directly under the roof covering, with numerous outlet drains discharging into it. The collector pipe is routed to a single downpipe. When the pipes fill, the water in the downpipe wants to fall. This action causes the water in the horizontal collector pipe to be pulled through the downpipe to replace the water flowing out. The water pressure in the system falls below atmospheric pressure and water on the roof is sucked into the connected drains. On reaching the ground, the water travels into a vented manhole or inspection chamber where it is discharged at atmospheric pressure into the storm sewer.

Products Details

DIAMETER(DISC) 220mm
THICKNESS(STEEL SHEET) 1.5mm
DIAMETER(PIPE) 75mm
SURFACE TREATMENT Phosphate coating
COLOUR Natural color
MATERIAL Aluminum
TECHNOLOGY Cast Aluminum / pressing
No Leakage:PE pipe is connected in the ways of butt fusion, socket fusion and electrofusion and the Strength of joint point is higher than tube itself. Complete control over downpipe discharge location gives increased design and programme flexibility Rainwater can be easily routed to collection tanks for future recycling, e.g. irrigation, fire ponds, sanitation etc.
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We listen to our Customers and add systems, processes,  equipment or facilities constantly to meet the needs and requests of our customers.Are you a manufacture company or trade company? we are a professional hardware manufacture company with over 10 years history, we have our own factory with complete hardware produce equipment and professional engineers that we can produce out perfectly products according to your requirements.
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1.Packaging Detail: a.clear bags inner packing, cartons outer packing, then pallet. b.as per customer's demand for hardware stamping parts. 2.Payment: T/T,30% deposits advance; 70% balance before delivery. 3.Shipping : 1.FedEx/DHL/UPS/TNT for samples, Door-to-Door; 2.By Air or by Sea for batch goods, for FCL;Airport/ Port receiving; 3.Customers specifying freight forwarders or negotiable shipping methods! Delivery Time: 3-7 days for samples; 5-25 days for batch goods.All kinds of surface treatment is available. Polishing/ zinc plating / nickel plating/ chrome plating/ powder coating/ phosphate coating 100% test before shipment,as per the customer's drawings, OEMorders are available.
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BOTOU RH DIE CASTING CO., LTD. is alarge-casting-processing-scale joint-stock companyengaged in die casting and processing. 2. Our company is mainly engaged in various types of castings, such as manhole cover, automobile parts, Siphonrain grate, iron die cast and aluminum die castand thedevelopment. 3.Our core contents are the direct marketing of all products and the double safeguard of after-sale service. 4.We look forward to establish cooperation relationship with more international friends to achieve coordinateddevelopment and a win-win situation.
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