Akasison XL

Akasison XL is ideal for larger roof surfaces. It is made of high density polyethylene (HDPE) and therefore has the well known black colour. Akasison XL is available in pipe diameters 40-315 mm. The jointing of this system is done by electrofusion. The connection to the roof outlets is fixed. Akasison XL uses a rigid bracket installation.
Below you can read more about some specific benefits.
Applied technology
The Akasison siphonic roof drainage system XL combines the following technologies:
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PE pipe system -
low weight and durability
The siphonic roof drainage system Akasison XL is made from High Density Polyethylene (PE). The low weight, impact
resistance and flexibility of this material make it the ideal choice for siphonic roof drainage projects using larger diameters.
- Rigid fixing system
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maximum safety & convenience

The Akasison fixing system with rail is designed to absorb length changes without transferring stress onto the roof construction. The brackets can be installed single-handed over the rail using easy click-on mounting, allowing maximum freedom of action high up in the building.
Watch our fixing system installation movies:
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welding technology -
simple and secure jointing for any diameter
For jointing Akatherm PE pipe and fittings, we recommend our electrofusion system (Akafusion). Electrofusion is the ideal method for jointing large roof Akasison XL systems as pipe work can be easily assembled and welded close under the roof. The Akafusion control box is extremely light (2 kgs) and can weld the full diameter range of electrofusion couplers 40-315 mm.
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At the heart of the siphonic roof drainage system, the roof outlet responds to negative pressure conditions in the system by streamlining the fluid flow, whilst preventing the entry of air. For every level of rain intensity, type of roof construction and roof membrane, you can choose a dedicated Akasison roof outlet.
