Access to the water chamber for maintenance and cleaning work is possible without any risk in the bottom area through a HUBER Pressure Door TT7. With the use of a pressure door, it is not necessary anymore to enter the chamber from the top on a ladder which is often wet and slippery. Especially if tools or auxiliary means for cleaning (such as a high pressure cleaner) are required in the chamber, access through the pressure door is much easier and above all much safer! The pressure door is completely made of stainless steel and closes absolutely tightly. It is installed flush into the casing already during the concrete work. It is therefore immensely important that built-in products such as pressure doors have the same service life as the concrete structure itself. Expensive and time-consuming repairs and refurbishing are excluded from the outset.
HUBER pressure doors ensure that these high requirements are met as they are carefully manufactured under precisely the right conditions for the material and pickled in an acid bath and passivated. HUBER offers also a special frame for bolted fixing for quick and easy retrofitting of tanks under refurbishment. When existing tanks are refurbished, they are frequently retrofitted with such a HUBER door which provides access at floor level. HUBER offers well-thought-out solutions also for lined containers. The pressure doors are operated with locking levers or optionally with a central lock. For safety reasons, both locking options can be operated by the user both from the pressureless outside and from inside (the pressure side). It is a matter of course that we use exclusively sealings certified to DVGW W270 standards to guarantee maximum hygiene.
Air filtering should be considered a basic necessity for drinking water reservoirs. Why air filtering? Pressure is generated when water is filled in or taken out of the tank. It must therefore be possible for the air to stream in and out through ventilation openings. However, the ambient air contains various organisms, such as germs, spores, pollen and fungi. These organisms may lead to germ formation and make the water unsuitable for human consumption (especially pregnant women and infants). To prevent germ formation, the air must be filtered for pressure equalisation in the drinking water reservoir.
The ventilation opening is securely protected against unauthorised access by an attack-proof louvre. Now, as such plants have increasingly been installed over the past 15 years, the use of an air filter plant should meanwhile have become state of the art. HUBER was active and leading in this field right from the beginning and offers tailored solutions, also for retrofitting existing plants. HUBER air filter plants with HEPA filter of filter class H13 (HEPA = High Efficiency Particulate Filter, filter for suspended particles) achieve a separation of at least 99.95% according to the requirements of DIN 1822 2011. Such high requirements for air purity have by now only been required as standard for operating rooms in hospitals.
Another milestone in our range of HUBER products for elevated reservoirs is the system of "active forced ventilation". This system for routing the supply and exhaust air consists of the HUBER air filtering technology combined with an adjustable ventilator. It is an easy yet innovative solution to prevent excessive condensation in water chambers.
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Find below an informative video on comprehensive HUBER stainless steel equipment for saftey in drinking water reservoirs: