Water-Pressure-Tight Wall Bushings for White Tank

State-of-the-art construction technology provides that building basements are carried out as a so-called white tank. A white tank does not need an additional sealing since base plate and outer walls are constructed as closed tank by using concrete with high waterproofness according to DIN EN 206-1 and DIN 1045-2.

Since the earth electrode material will be covered with concrete layer of at least 5 cm (corrosion protection measure) there is no more humidity, the concrete is an insulation. An earth electrode therefore has to be installed outside of the white tank, usually in the blinding layer underneath the foundation plate.
(Ref.: DIN 18014 Fundamenterder – Allgemeine Planungsgrundlagen“:2007-09 be (Title English: Foundation earth electrode – General planning criterial).
The ring earth electrode meshes under the foundation plates installed according to DIN 18014 have to be connected with the main earthing busbar of the building for equipotential bonding.

The electrical connection with the ring earth electrode also has to be water-tight. DEHN has developed the water-tight wall bushing in accordance with the requirements placed on a white tank. For that reason explicit care was taken in the development to configurate the component requirements as reality conform as possible. The specimen were encased into concrete (Figure 1) and then submitted to a pressure-water test. In regular construction technology installation sites in a depth of 10 m (e.g. underground car parks) are quite usual. Such terms of installtion was simulated for the specimen and a water pressure of 1 bar was imposed (Figure 2). After the required hardening period of the concrete, the specimen were subjected to a pressure water test and examined for watertightness during a 65 hours longterm test. Another challenge was the capillary attraction of bushings. The capillary effect means that liquids (e.g. water) spread quite differently in narrow gaps, cracks or tubes (capillaries) in fact they will literally be sucked or drawn into the building. Such fissures and cracks may arise during the hardening and the concurrent shrinking process of the concrete. Therefore a professional, competent and correct installation of the wall bushing in the formwork as described in detail in the installation instructions, is quite important.

– Tested with 5 bar compressed air according to EN 50164-5
– Type for formwork installation with water barrier and double thread M10 / M12 for connection e.g. to the equipotential bonding bar
– Adjustable according to wall thickness by thread M10 and lock nut
– Bushing thread may be cut to length if necessary
– Including connecting piece (St/tZn dimension 30x4 mm) with square hole for connection with clamping frame at round conductors or cross unit at flat strips

3 Products

Part No. 478530 WD M10 12 V4A DWD L200 300 STTZN

GTIN 4013364120341, Customs tariff No.: 85389099, Gross weight: 697.00 g, PU: 1.00 pc(s)


Images

Additional information

Water-pressure-tight wall bushing for white tanks, StSt (V4A)
Waterproof wall bushing for white tanks
Water-pressure-tight wall bushing, e.g. for connecting the ring earth electrode with the equipotential bonding bar or the equipotential bonding conductor in the foundation.
Pressurised water test with 1 bar represents an installation depth of 10 m in stagnant water.
Tested with 5 bar compressed air according to FprEN 62561-5 (2008-06 edition)
Material of plate: StSt (V4A)
Material No.: 1.4571 / 1.4404 / 1.4401
ASTM / AISI:: 316Ti / 316L / 316
Material of axis: St/tZn
Wall thickness : 200-300 mm
Connection thread: M10 / 12
Short-circuit current (a.c. 50 Hz / d.c.): 4.1 kA
Standard: EN 62561-(1+5)

Brand: DEHN
Type: WD M10 12 V4A DWD L200 300 STTZN
Part No.: 478530
or equivalent.

 

Technical data

Material of plate StSt (V4A)
Material No. 1.4571 / 1.4404 / 1.4401
ASTM / AISI: 316Ti / 316L / 316
Material of axis St/tZn
Wall thickness (l1 ) 200-300 mm
Connection thread M10 / 12
Connection plate Ø 80 mm
Short-circuit current (a.c. 50 Hz / d.c.) (1 s; ≤ 300 °C ) 4.1 kA
Standard EN 62561-(1+5)

Product 478530 was added to Notepad.

Product 478530 was added to the cart.

Part No. 478540 WD M10 12 V4A DWD L300 400 STTZN

GTIN 4013364120358, Customs tariff No.: 85389099, Gross weight: 750.00 g, PU: 1.00 pc(s)


Images

Additional information

Water-pressure-tight wall bushing for white tanks, StSt (V4A)
Waterproof wall bushing for white tanks
Water-pressure-tight wall bushing, e.g. for connecting the ring earth electrode with the equipotential bonding bar or the equipotential bonding conductor in the foundation.
Pressurised water test with 1 bar represents an installation depth of 10 m in stagnant water.
Tested with 5 bar compressed air according to FprEN 62561-5 (2008-06 edition)
Material of plate: StSt (V4A)
Material No.: 1.4571 / 1.4404 / 1.4401
ASTM / AISI:: 316Ti / 316L / 316
Material of axis: St/tZn
Wall thickness : 300-400 mm
Connection thread: M10 / 12
Short-circuit current (a.c. 50 Hz / d.c.): 4.1 kA
Standard: EN 62561-(1+5)

Brand: DEHN
Type: WD M10 12 V4A DWD L300 400 STTZN
Part No.: 478540
or equivalent.

 

Technical data

Material of plate StSt (V4A)
Material No. 1.4571 / 1.4404 / 1.4401
ASTM / AISI: 316Ti / 316L / 316
Material of axis St/tZn
Wall thickness (l1 ) 300-400 mm
Connection thread M10 / 12
Connection plate Ø 80 mm
Short-circuit current (a.c. 50 Hz / d.c.) (1 s; ≤ 300 °C ) 4.1 kA
Standard EN 62561-(1+5)

Product 478540 was added to Notepad.

Product 478540 was added to the cart.

Part No. 478550 WD M10 12 V4A DWD L400 500 STTZN

GTIN 4013364120365, Customs tariff No.: 85389099, Gross weight: 838.50 g, PU: 1.00 pc(s)


Images

Additional information

Water-pressure-tight wall bushing for white tanks, StSt (V4A)
Waterproof wall bushing for white tanks
Water-pressure-tight wall bushing, e.g. for connecting the ring earth electrode with the equipotential bonding bar or the equipotential bonding conductor in the foundation.
Pressurised water test with 1 bar represents an installation depth of 10 m in stagnant water.
Tested with 5 bar compressed air according to FprEN 62561-5 (2008-06 edition)
Material of plate: StSt (V4A)
Material No.: 1.4571 / 1.4404 / 1.4401
ASTM / AISI:: 316Ti / 316L / 316
Material of axis: St/tZn
Wall thickness : 400-500 mm
Connection thread: M10 / 12
Short-circuit current (a.c. 50 Hz / d.c.): 4.1 kA
Standard: EN 62561-(1+5)

Brand: DEHN
Type: WD M10 12 V4A DWD L400 500 STTZN
Part No.: 478550
or equivalent.

 

Technical data

Material of plate StSt (V4A)
Material No. 1.4571 / 1.4404 / 1.4401
ASTM / AISI: 316Ti / 316L / 316
Material of axis St/tZn
Wall thickness (l1 ) 400-500 mm
Connection thread M10 / 12
Connection plate Ø 80 mm
Short-circuit current (a.c. 50 Hz / d.c.) (1 s; ≤ 300 °C ) 4.1 kA
Standard EN 62561-(1+5)

Product 478550 was added to Notepad.

Product 478550 was added to the cart.


back to top

Cookie Settings

We use cookies so that we can offer you the best possible website experience. This includes cookies which are necessary for the operation of the website and to manage our corporate commercial objectives, as well as other cookies which are used solely for anonymous statistical purposes, for more comfortable website settings, or for the display of personalised content. You are free to decide which categories you would like to permit. Please note that depending on the settings you choose, the full functionality of the website may no longer be available. Further information can be found in our Privacy Policy.
If you have given your consent for us to set cookies, you can revoke it at any time by clicking on the “Change Cookie Setting” link in the footer of the page.

  • Show details Hide details
    Necessary

    These cookies are necessary to run the core functionalities of this website, e.g. security related functions. With these cookies we can also detect if you want to stay logged into your profile to provide you with fast access to our services after revisiting our website.

    Statistics & Marketing

    In order to continuously improve our website, we anonymously track data for statistical and analytical purposes. With these cookies we can , for example, track the number of visits or the impact of specific pages of our web presence and therefore optimize our content.