Underpressure roof inlet 40mm with stainless steel collar and additional bitumen collar, inlet height H=496mm, vertical outlet, for roofs with bituminous covering, steel type AISI-304 (1.4301) 403.204.040

Roof inlets – effective drainage of water from the roof

This 40 mm diameter vacuum roof inlet, made of stainless steel AISI-304 (1.4301), is a solid and reliable solution for roof drainage systems. Equipped with a stainless steel flange and an additional bitumen collar, it is ideal for roofs covered with bituminous materials. Its design ensures effective water drainage, especially in vacuum systems, where speed and efficiency are important. The inlet height H=496mm and vertical outlet guarantee optimal performance in various weather conditions.

It is worth knowing that vacuum systems, in which this inlet is used, are particularly recommended for roofs with large surfaces (over 500m2), such as office buildings or industrial facilities. Thanks to the use of an air gap acting as a siphon, the pipes are filled 100%, eliminating the presence of air and increasing the water flow rate. This translates into a smaller number of inlets and pipes needed, as well as the possibility of laying them horizontally without a slope – which significantly simplifies installation and reduces costs.

Design and application

The inlet has been designed with durability and ease of installation in mind. Stainless steel AISI-304 provides corrosion resistance and a long service life, even in harsh weather conditions. The additional bitumen collar facilitates a tight connection with the bituminous covering, minimizing the risk of leaks. It can be used in both vacuum and gravity systems, providing flexibility in roof drainage design.

The BLÜCHER® EuroPipe roof drainage system, compatible with this inlet, offers pipes and fittings of various diameters (40-250 mm) and lengths (0.15-6 m), allowing adaptation to the individual needs of each project. These pipes can be easily cut to size, and their versatility allows them to be used in both vacuum and gravity systems without the need to replace gaskets.

Benefits of use

• Fast water drainage: The vacuum system ensures effective drainage of water from the roof, minimizing the risk of puddles and structural damage.
• Durability: Made of stainless steel AISI-304 guarantees corrosion resistance and long service life.
• Easy installation: Flanges facilitate a tight connection with the roof covering and quick mounting of the inlet.
• Versatility: Possibility of use in both vacuum and gravity systems increases design flexibility.
• Compact size: The compact design of the inlet minimizes interference with the roof structure during installation.
• Safety: Non-flammability of materials provides additional safety of building use.