Underpressure roof inlet 40mm with stainless steel collar, inlet height H=502mm, vertical outlet, for single layer insulation, steel type AISI-304 (1.4301) 402.204.040

Effective roof water drainage – stainless steel vacuum drain

This vacuum roof drain with a diameter of 40 mm, made of AISI-304 (1.4301) stainless steel, is a reliable solution for drainage systems of larger roofs. Its construction, with a stainless steel collar and a height of 502 mm, ensures effective water drainage, especially in buildings such as office buildings, industrial halls or shopping centers. The use of a vacuum system allows for fewer drains and pipes with smaller cross-sections compared to traditional gravity systems.

Design and application

The drain is designed for installation in a single layer of insulation. Thanks to the air gap acting as a siphon, the pipes quickly fill with water, eliminating air and enabling drainage with the full cross-section. This in turn generates a suction effect (vacuum), increasing the flow rate of water and the efficiency of the entire system. This is particularly important on large roof surfaces, where traditional gravity systems may prove insufficient.

Advantages for the installer and end user

• Efficiency: The vacuum system provides faster and more effective drainage of water from the roof, minimizing the risk of water stagnation.
• Durability: Made of AISI-304 stainless steel, it guarantees corrosion resistance and a long service life, even in harsh weather conditions.
• Installation flexibility: The ability to lay pipes horizontally without a slope simplifies installation and reduces costs associated with construction work.
• Material savings: Compared to gravity systems, the vacuum system requires fewer pipes and drains, which translates into lower investment costs.
• Reliability: The drain design minimizes the risk of clogging and ensures stable system operation for a long time.
• Safety: The non-flammable material increases the safety of building use.

It is worth remembering that drains for vacuum systems are ideal for roofs with an area of over 500 m², while those for gravity systems will work on smaller surfaces – in residential homes, garages or small offices. For complete roof drainage, it is recommended to use EuroPipe pipes and fittings.