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Building Types

Commercial Applications

Drainage Ventilation Solutions for Commercial Buildings

Whether a commercial warehouse, factory, conference centre, stadium, hotel complex, shopping centre or hospital, whatever its dimension, complexity or height, Studor can provide a drainage solution for any type of building. Examples, product sheets and reference projects are demonstrated here.

Studor Air Admittance Valves (AAVs) are negative pressure-activated, one-way vents, used in a drainage system to eliminate the need for conventional pipe venting and unsightly roof penetrations. The great flexibility of Studor solutions will complement or adapt to any commercial installation.

Here are our most common products with a brief description about their usage within commercial applications, as well as a link through to their product pages:

P.A.P.A. (Positive Air Pressure Attenuator)

  • The Studor P.A.P.A. is a revolutionary ‘world-first’ developed to resolve the problems of positive pressures (transients, back-pressure) specifically within the drainage systems of multi-storey, high-rise developments. This is the perfect complement to the Studor AAVs, providing a complete venting solution for any multi-storey building over 10 storeys high. Where the range of AAVs are used in conjunction with the P.A.P.A., this is known as the Studor System.

  • A valve for single fixture and group venting.

  • A valve for stack venting, eliminating the need for a vent pipe through the roof. In buildings with more than 10 storeys, a P.A.P.A. is also required.

  • A valve designed for commercial applications and industries where flame retardance is a priority.

  • Maxi-Filtra
    The Maxi-Filtra is an active carbon filter designed to eliminate bad odours produced by the drainage system. For use externally, it operates as a two-way vent, filtering air in both directions. For use commonly with septic tanks, in conjunction with an AAV, for open vent pipes or where additional extension of vent pipes cannot be fitted.

  • Trap-Vent
    This compact highly-styled product is a combined trap with a 50mm water seal and an integral AAV, reducing the need for secondary ventilation and replacing conventional S and P traps. Available in a polished chrome-plate finish, the Trap-Vent is the finishing touch to any new or refurbished bathroom.

What size building do you have?

Sample Reference Projects

Berlaymont Building, Brussels, Belgium
Berlaymont Building, Brussels, Belgium

The Berlaymont, occasionally nicknamed The Berlaymonster, is a four winged, cross shaped office building in Brussels, Belgium, housing the headquarters of the European Commission, which is the executive of the European Union (EU). First occupied in 1967, the building has been subject to much expansion and renovation work since. It currently provides office space for 3000 officials on 14 floors and has a restaurant able to seat 900.

Installation Description:

Over a thousand Studor Mini-Vents (Mini-KNITS) and Maxi-Vents (KNITS II) were installed as part of the refurbishment works.


La Caja Mágica ("The Magic Box'"), Manzanares Park Tennis Center, Madrid, Spain
Caja Magica, Tennisand Sports Stadium, Madrid

La Caja Mágica is the most modern tennis venue in the world; completed in 2007 and constructed in steel, wood and glass, the sports complex was designed by French architect Dominique Perrault. The name “Caja Mágica”, or “Magic Box” in English, refers to the dynamic design of the angular, shifting shell that covers the two pavilions. A series of retractable roofs cover the 3 clay courts with a total seating capacity of 20,000.

Installation Description:
The use of Maxi-Vent solved two problems specific to this build: The moving roof needed to be completely free from any pipe interference; and the stepped nature of the seating areas meant that space for traditional stack ventilation was not available.

Related Links: Low Rise, Maxi-Vent

Gran Meliá Fénix Hotel, Madrid, Spain
Gran Meliá Fénix Hotel, Madrid, Spain

The Gran Meliá Fénix Hotel, positioned in the exclusive Calle de Hermosilla, close to the financial district, been described as having a distinct aura of privilege. A symbol of European elegance, this luxurious Madrid Hotel has a grand and glowing neo-classical exterior. The renovation involved changes to the layout of the rooms and increased the number of bathrooms adding a requirement for additional drainage pipe work where there was limited space.

Installation Description:
Studor AAVs were installed to reduce the need for additional pipe work.


Hospital de Vallecas, Madrid, Spain
Madrid Hospital, Vallecas

In this newly constructed hospital, opened in 2008, all theatres and large meeting rooms are located on the top floor of the 3 storey building. Over 250 Maxi-Vents have allowed no pipe presence or interference in these crucial rooms. The drastic reduction of roof penetration became a real bonus with the design and finish of the building which would not have been possible using traditional open air stacks.

Installation Description:
The drainage system design consists mainly of stacks: no branches. Each stack serves a maximum of 4 bathrooms per floor and toilets are independently linked to the stacks. The concept was to install as many stacks as possible to allow only very short branches. The Maxi-Vent was used on the majority of the stacks, as the stacks have to stop at the second level.

Related Links: Low Rise, Maxi-Vent

McNamara Terminal, Detroit Metropolitan Wayne County Airport, USA
McNamara Airport Terminal in Detroit, USA

The McNamara Terminal Concourse A is the world's second longest airport terminal building at 1 mile (1.6 km). The largest terminal at Detroit Wayne County Airport, Michigan, its 97 gates serve both domestic and international routes; providing Delta Air Line’s primary portal to Asia and its third busiest gateway to Europe.

Installation Description:
Studor AAVs were installed in the new Edward H. McNamara Terminal as the positioning of the toilets in a central location within the building, and high usage rates, made traditional plumbing impractical.

Testimonial:
“This was my first experience with the Studor air admittance valve and we are very pleased with the resulting labor and material savings and the excellent performance of this product. We would certainly consider using the Studor valves again.”
Larry Turner Project Manager, CPG
Related Links: AAVs, Low Rise

Turner Field, Atlanta, USA
The Olympic Stadium (Turner Field) in Atlanta, USA

Originally built to serve as the centrepiece of the 1996 Summer Olympics in Atlanta, Georgia, the stadium was converted into a 50,000 seat, open air, natural grass baseball park, opening in 1997. The ‘Home of the Braves’ has quickly become an Atlanta landmark and a benchmark for future baseball park design.

Installation Description:
The cascading nature of the seating areas in a stadium means that a traditional stack system can’t be fitted easily. Use of Studor AAVs is the perfect solution in this situation.

Testimonial:
“I would be pleased to recommend Studor. My experience with these vents at Turner Field in Atlanta USA has been excellent. We have experienced no failures of any kind. I find them to be reliable and maintenance free.”
Eric Perestuk Director of Engineering, Turner Field
Related Links: AAVs, Low Rise, Retrofit & Refurb

Drusillas Park, East Sussex, UK
Drusillas Park

Having already solved major sewer gas problems by installing several Maxi-Filtra vents in the past, Drusillas Park, a popular tourist attraction in East Sussex, contacted Studor to obtain further Studor vents, to prevent similar problems occurring in an area of new development within the park.


For advice on installing the correct combination of AAVs, the Studor System or other associated Studor products, we have an in-house team that has worked on every type of building across the world. Please contact us or the local distributor in your country for assistance.