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The duct goes out in the open
www.p3italy.it
Current projects for ducts systems rely more and more often on external systems both for architectural
reasons and on account of restrictions imposed by design, such as the fitting of air-handling units
on roofs. It follows that the duct must comply with technical and constructional requisites which
ensure perfect functionality, even when conditions are critical. A proper assessment of the best
solution to adopt must take care of traditional factors (thermal insulation, minimum leakage, safety,
eco-compatibility, etc.) as well as other more specific aspects such as the following:
>> high resistance to atmospheric agents
>> high resistance to shock and accidental perforations
>> high resistance to wind forces
>> high resistance to the weight of snow
In order to provide a better response to these parameters, P3 has created, together with the P3ductal
Indoor system for interiors, the P3ductal Outdoor system for the construction and laying of
preinsulated aluminium ducts for external applications.
the requirements of a ducts system
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performance and cost-effectivenessGreater speed of construction in comparison to the traditional sheet metal duct: this is the secret of the cost-
effectiveness of P3ductal Outdoor for the construction of ducts to be used in external applications. P3ductal Outdoor
ducts are easy to construct and, being preinsulated, require no addition of further insulation. P3ductal Outdoor
is constructed with a highly resistant external aluminium sheet of a thickness of 200 microns, which makes it
unnecessary to use the external aluminium foil coating typically used in sheet metal ducts fitted for exteriors. The only
phase added to the construction of the duct is the application of the waterproof sheath Gum Skin, which guarantees the
very high performance that characterises the P3ductal system, even in particularly adverse conditions.
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external aluminium foil 6/10 mm
intermediate insulation with glass fibre 5 cm
duct in galvanized sheet iron with 10/10 thickness
traditional sheet metal duct
preinsulated aluminium duct P3ductal Outdoor with 30 mm thickness
external sheath gum skin
P3ductal Outdoor system
Phase P3ductal Outdoor Sheet metal duct
Construction of the duct as indicated by standard procedures as indicated by standard procedures
InsulationNOT NECESSARY
BECAUSE PREINSULATEDapplication of a layer of glass fibre which usually has a thickness of 5 cm
Outer coatingapplication of the waterproof
sheath Gum Skinapplication of an aluminium foil of 6/10 mm
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The system - the panelThe constructional features that characterise this panel make it particularly rigid and highly resistant to shock
and to accidental perforations, which may easily occur in the case of external applications. The Piral HD Hydrotec
Outsider panel is constructed with foamed polyurethane of a density of 48 ± 2 kg/m3, a thickness of 30.5 mm,
is coated with embossed aluminium of a thickness of 200 micron on the external side and 80 micron on the
internal one. The aluminium is conveniently protected with 2 g/m2 of antioxidant polyester-type lacquer. Thanks
to the large number of closed cells, in fact over 95%, the polyurethane foam of the panel offers an initial thermal
conductivity of 0.022 W/(m °C).
Code Size Technical data
bxh thickness density aluminium th. initial th. conduct class of rigidity
15HS31 400x120 cm 30,5 mm 48 ± 2 kg/m3 200/80 µm 0,022 W/m°C 900.000
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The system - the accessories
>> P3ductal flanging system: it ensures the perfect union between pieces and also the high tightness of the joints, thus
reducing the risk of infiltrations.
>> Profiles Outdoor glue (code 21CL09), a special, single-component polyurethane adhesive for the application of
profiles and flanges. It guarantees high performance of tightness even when external conditions are particularly
aggressive.
>> Waterproof sheath Gum Skin: a special rubber sheath which features elastomeric properties, is resistant to UV
rays and has excellent behaviour during freezing/thawing cycles. Besides, the special fungicide, bactericide and
plasticising additives with internal action ensure the product remains unaltered over time, even in conditions of
average industrial pollution. Gum Skin guarantees excellent protection for the ducts system against the formation
of algae and fungi as well as high protection against corrosive agents (acid rain, sulphur dioxide, carbon dioxide)
and UV rays.
snow and windThe rigidity of the Piral HD Hydrotec Outsider panel is equivalent to 900,000 Nmm2/mm according to UNI
EN 13403. Considering the asymmetric structure of the panel, this value has been used for the assessment
of extreme outside loads (snow and wind force). As regards the reinforcement system, instead, it becomes
necessary to take into account the curves related to the class of rigidity 300,000 Nmm2/mm due to the internal
working pressure of the duct. The reinforcement system, constructed by inserting special small tubes of
aluminium alloy, proves to be indispensable when high standards of safety are required. The reference
standard establishes a maximum deformation on the sides of rectangular ducts which should be equivalent
to 3% of the overall size of the duct and, in any case, never higher than 30 mm.
In external installations it is necessary to consider the fact that the pressure exercised on ducts by the snow
and/or the wind will directly transfer on the bracketing system. In order to limit the effects of these two agents,
it is recommendable to construct square-section ducts.
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extreme loads and reinforcements – class of rigidity 300,000
snow and wind
under pressure
0 reinforcement
1 reinforcement every 1000mm
1 reinforcement every 600mm
2 reinforcement every 600mm
at low pressure
side bearing the wind and snow forces
side [mm]
Pres
sure
[Pa]
HospitalsOspedale Galliera (Genova) > Ospedale Fondazione Macchi (Varese) > Ospedale di Borgosesia (Vercelli) > Policlinico (Catania) > Ospedale Cervello (Pa-
lermo) > Ospedale Gaslini (Genova) > Ospedale Niguarda (Milano) > Banca della pelle (Siena) > CTO (Torino) > Banca dell’occhio (Siena) > Ospedale
Careggi (Firenze) > Nuovo Ospedale (Mestre Venezia) > Ospedale Civile (Ravenna) > Ospedale Civile (Rimini)
IndustriesStabilimento Buondì Bistefani (Alessandria) > Pasta Zara (Trieste) > Industria alimentare Barilla (Parma) > Parmalat (Parma) > Industria Dociaria
Gazzoni Dietorelle (Bologna) > Stabilimento Galbani (Pavia) > Industria Nautica Azimuth (Cuneo) > Diageo (Cuneo) > Ferrari (Modena) > Bioprogress
Spa (Frosinone) > Industria alimentare di Bauli (Verona) > Locatelli (Cuneo) > Centro produttivo Luxottica (Belluno) > Lavorazione Lattebusche (Bellu-
no) > Fidia farmaceutica (Enna) > Gruppo caseario Gloria (Nuoro)
Shopping centres and officesCentro logistico Coop (Forlì Cesena) > Nuova Fiera (Milano) > Fiera (Genova) > Centro stampa “Nuova Sardegna” (Sassari) > Tribunale (Pesaro) >
Citta’ della moda (Sestu - Cagliari) > Emmezeta (Lucca) > Centro commerciale “Le vele” di Desenzano (Desenzano - Brescia) > Centro commerciale
Orio al Serio (Bergamo) > Centro di meccanizzazione (Genova) > Sede gruppo Banca Lombarda - palazzo SBIM (Brescia) > Sede del Corriere della Sera
(Milano) > Centro meccanizzazione postale (Mestre - Venezia) > Centro commerciale Ipercity (Padova) > Sede Hypo Alpe Adria Bank (Udine) > La Rina-
scente (Padova) > Centro Unicomm (Udine) > Net Center (Padova) > Centro logistico Coop (Pordenone) > Catena Negozi Bata > Catena Negozi Zara >
Catena Coin > Fiera di Gorizia > Centro commerciale “Le Brentelle” (Padova)
Culture, sport, entertainment
Villaggio olimpico (Bardonecchia - Torino) > Stadio Euganeo (Padova) > Palaoval (Torino) > Palavela (Torino) > Palazzo dello sport (Vicenza) > Boccio-
dromo (Mirandola - Modena) > Piscina Columbus (Padova) > Piscina Olimpica (Pesaro Urbino) > Acquario (Russi - Ravenna) > Multisala Warner Bros
(Vicenza) > Teatro Palafenice (Venezia) > Hotel Center Gross (Bologna) > Hotel Mantegna (Padova) > Hotel Giotto (Padova)
Airports and stationsAeroporto di Malpensa (Milano) > Aeroporto di Caselle (Torino) > Aeroporto Marco Polo (Venezia) > Stazione Alta Velocità (Reggio Emilia)
our reference, your guarantee
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OspedaliBusan St. Mary’s Hospital (KOREA) > St. Vincent de Paul Hospital (MALTA) > St. Philip’s Hospital (MALTA) > Prizren Regional Hospital (KOSOVO)
> Jeonbuk University Hospital (KOREA)
IndustrieLanzhou Cigarettes Factory (CINA) > Wuliangye Group Spirits (CINA) > Flexonic Factory (CINA) > Nestlè (TURCHIA) > Pharma International
(GIORDANIA) > Cadbury Schwepps (AUSTRALIA)
Shopping centres and officesCarrefour Bursa (TURCHIA) > Universe Shopping Center (ALBANIA) > Capricorn Tower (UAE) > Al Mouroiji (UAE) > Carrefour Shenzen (CINA) >
Palazzo delle Nazioni (TAJIKISTAN) > Vodafone New Zeland (NUOVA ZELANDA)
Culture, sport, entertainmentFluvial Project (PORTOGALLO) > Incheon Student’s Cultural Center (KOREA) > Youngju Sport Center (KOREA) > Brewery Shopping Center and
Cinema Complex (GRAN BRETAGNA) > Golden Sands Resort (MALTA) > Hotel Laguna Mangon (CUBA) > Cap Cana Resort (REPUBLICA DOMINI-
CANA) > Sheraton Hotel Ndjamena (TCHAD) > Hotel Grand Excelsior (MALTA) > Island Shangri-La Hotel (HONG KONG) > Jumeirah Beach Hotel
(UAE) > Hilton Hotel (MALTA)
Airports and stationsiAeroporto di Casablanca (MAROCCO) > Curacao International Airport (CURACAO) > Hong Kong International Airport (HONG KONG) >Yong Jung-do Airport (KOREA) > Shenzhen Railway Station (CINA)
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our reference, your guaranteealso abroad
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le sei marce P3ductal...un sistema, sei soluzioni.
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P3ductal six gears...one system, six solutions.
For fifty years at the service of the air.For more than 3 generations we have been working in the air distribution ducts field. Today P3 is part of an ever increasing international
group, whose mission is the promotion of the P3ductal preinsulated aluminium duct with the aim of turning it into an important reality
in the air distribution ducts market. P3 has renewed the construction system of traditional galvanised sheet metal ducts, by creating
and developing the P3ductal technology which uses preinsulated aluminium panels, accessories, tools and machinery intended for the
construction and installation of air distribution ducts. The P3ductal system is produced in various plants around the world, distributed
in more than 40 countries and can count on a widespread sales network, able to give the required support to all its customers and
consultants. One of P3’s strong points is the constant research in order to improve the quality of its products. There is a continuous
commitment and innovation of its internal laboratories which cooperate in close relationship with various University Research Centres:
P3 is able to offer vanguard performances and technologically advanced materials. Since 1996 P3 has been working under a certified
management system according to the UNI EN ISO 9001-2000 standard and has already obtained the Environmental Certificate UNI EN
ISO 14001-2004 and the OHSAS 18001-1999 certification.
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P3 srl
Via Don G. Cortese, 3 - Villafranca Padovana, Loc. Ronchi - Padovatel. 049 9070301 - fax 049 9070302 - www.p3italy.it - [email protected]
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