HDPE Siphonic Inverted Roof Drain
HDPE siphonic inverted roof drain is designed for compatible siphonic roof drainage systems and is used at roof collection points to receive rainwater and connect it into the HDPE drainage network.

Material: HDPE
Type: Inverted Roof Drain
Application: Siphonic roof drainage
Size Range: 50–200 mm
Available Models: 8
All Models & Specifications
Available HDPE siphonic inverted roof drain sizes are listed below.
| Size (mm) |
|---|
| 50 |
| 63 |
| 75 |
| 90 |
| 110 |
| 125 |
| 160 |
| 200 |
About HDPE Siphonic Inverted Roof Drain
The inverted roof drain is a roof-level collection component in a siphonic drainage system. It receives rainwater from the roof surface and directs it into the connected HDPE drainage pipework.
The correct drain size should be selected together with the roof structure, waterproofing arrangement, drainage layout, connected pipe size and the hydraulic requirements of the project design.
About HDPE Siphonic Drainage Systems
HDPE is widely used in drainage systems because it is corrosion resistant, lightweight and suitable for welded pipe connections. A complete HDPE siphonic drainage system can include butt fusion fittings, electrofusion fittings, roof drains and installation accessories.
For siphonic roof drainage projects, component selection should be coordinated with roof layout, rainfall design, pipe routing, connection method and the hydraulic design requirements of the project.
Product Details
Overview
The HDPE siphonic inverted roof drain serves as an inlet between the roof surface and the HDPE drainage pipe system in compatible siphonic drainage installations.
Product Features
- HDPE construction
- Designed for siphonic roof drainage systems
- Roof rainwater collection component
- 8 listed sizes
- Size range from 50 to 200 mm
Applications & Installation
Typical Applications
Used in compatible siphonic roof drainage systems for commercial, industrial and other building projects requiring roof rainwater collection and connection to HDPE drainage pipework.
Installation
Select and position the roof drain according to the roof structure, waterproofing layer and drainage design. The outlet connection should match the connected HDPE drainage pipe size and the installation method specified for the project.
Ordering Information
- Required size
- Project quantity
- Roof application if technical matching is required
- Delivery destination
Frequently Asked Questions
What is an inverted roof drain used for?
It is used to collect roof rainwater and connect the roof inlet point to a compatible siphonic drainage system.
What sizes are available?
The currently listed sizes are 50, 63, 75, 90, 110, 125, 160 and 200 mm.
What information is needed for quotation?
Please send the required sizes, quantities and delivery destination.
Need HDPE siphonic inverted roof drains?
Send us your required sizes and quantities for quotation and lead-time confirmation.
Related Products
HDPE Siphonic Drainage Sovent
Butt-fusion drainage branch fitting for compatible HDPE stack systems.
HDPE Electrofusion Siphonic Drainage Coupler
Electrofusion coupler for straight welded HDPE drainage pipe connections.

