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Rectangular Pressure-Tight Door TT7.Z with Central Lock

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Access door for containers, especially in the field of potable water supply, pressure-tight up to a water gauge of 10 m

Pressure-tight door, pressure-tight up to a water gauge of 10 m, opening to the pressure side, ready for installation, to be lined on both sides (wall thickness ≥ 300 mm), rectangular, completely made from 1.4404 (AISI 316 L) stainless steel, statically certified. Registered design no. 298 01 144.1

Door, plate thickness: 5 mm thick, reinforced with U-shaped bent plate. Smooth door leaf on the pressure side. With circumferential square silicone seal, suitable for potable water, ozone resistant, certified to KTW and DVGW W 270 standards. Locking crank handles operable both from the door outside and, for safety reasons, also from the pressure side while the reservoir is empty. With stable maintenance-free hinge plates between the door and frame.

Frame, circumferential with one centre and two side gaskets, provided for embedding in concrete. Frame with lifting eyes.
Frame and door shielded arc-welded and acid bath cleaned before washing, drying and surface passivation.

Door opening variants:

  • Hinges on left
  • Hinges on right
HUBER Rectangular Pressure-Tight Door TT7.Z with Central Lock
HUBER Rectangular Pressure-Tight Door TT7.Z with Central Lock
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  • Sanding of frame parts in contact with concrete
  • Condensate drain on external door surface
  • Sampling valve on external door surface
  • Doorstop with wedge
  • Partly submersible, lower part pressure-tight, upper part with an integrated inspection opening
  • Provided for welding to the PE coating
  • Potential equalisation on the frame
  • Completely made of 1.4307 (AISI 304 L) stainless steel
  • Frame, for retrofitting, space required for the frame: 150 mm, circumferential. Prerequisite is a plane inner wall surface, tolerance: ± 1 mm per metre.
  • Pressure door for round tanks
  • Centrally installed inspection window, inside diameter: 150 mm, with or without window wiper
  • Installed LED underwater spotlight
  • Installed cylinder lock (operable from one side)
  • Pressure door with three-sided open-top frame for parapets, maximum water gauge = door height.

FAQ

Frequently Asked Questions

Pressure-tight doors are optimally suited for use in drinking water reservoirs. They offer optimum tightness so that no drinking water can escape. The pressure-tight door is therefore also ideal as a maintenance opening when the reservoir is being cleaned. Of course, the seal and other components are also certified for use in drinking water applications.

Security doors, on the other hand, are specially designed for the drinking water supply of buildings with burglar alarm systems.

HUBER SE offers three different types of closure for its pressure-tight doors. Locking levers, central closures and screw closures.

Case Studies

HUBER Solutions in Operation

img-casestudy-13-03-hochwasserschutz-01
2013-03-10 Ruggell, Liechtenstein

Stormwater tanks with effective flood protection in the Principality of Liechtenstein

After erection of a stormwater tank, the combined water (stormwater and domestic wastewater) from the sewers can be...

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