On the safe side with HERZ
Legal requirements in the field of drinking water
Water is the source of all life – and plays a central role in our everyday lives. With its drinking water fittings, HERZ offers more than just functionality: they meet the highest standards and certifications and also set benchmarks in quality and safety, so that the most important thing in life flows into your everyday life with the utmost care. HERZ fittings have the necessary registration certificates for its drinking water products from the WIEN-ZERT registration body. In addition, selected HERZ products have been awarded quality marks such as ÖVGW and DVGW.
The ÜA mark is a legal requirement for the installation of drinking water fittings. To obtain this mark, products must pass a rigorous test carried out by a testing laboratory. The ÜA mark confirms that the products comply with the strict requirements of Austrian legislation, are hygienically safe and therefore have no harmful effects on drinking water quality.
In Austria, all pipes, fittings and building fittings in the drinking water supply must be certified in accordance with ÖNORM B 5014 1-3 in order to be installed. Although the purchase and sale of products without the ÜA mark is permitted, installation is prohibited by law—the installer is ultimately liable. To avoid unpleasant and costly consequences, it is therefore important to always look for the ÜA mark when purchasing.
If a product has a valid ÜA mark, additional quality certificates such as those from ÖVGW or DVGW can be applied for. In addition to legal drinking water suitability, these quality marks confirm comprehensive testing and ongoing monitoring – from the materials to product liability insurance.
HERZ products in the drinking water fittings sector bear the legally required ÜA mark. In addition, HERZ also has quality certificates from ÖVGW and DVGW.
HERZ Drinking Water Filter with Pressure Reducer
The HERZ Drinking Water Filter with Pressure Reducer combines pressure regulation and filtration in a single device. It protects household appliances from excessive inlet pressure (adjustable from 1.5–6 bar) and simultaneously filters solids out of the water. For the best drinking water quality – with a robust housing made of brass suitable for drinking water and a filter cup made of PA 12. For systems with an existing filter, the HERZ Pressure Reducer is also available as a single component.
HERZ Drinking Water Mixing Valve
HERZ Drinking Water Mixing Valves are safety fittings that regulate the hot water outlet temperature to the set value. A fast-reacting wax-filled thermostatic element mixes hot and cold water, preventing uncontrolled high temperatures and scalding. The product enables temperature control from 35 to 70 °C and is manufactured in accordance with standards EN 1111 and EN 1287. It is available with a modified flow direction or with a reversible flow direction.
HERZ Circulation Temperature Limiter
The HERZ Circulation Temperature Limiter is a thermostatic throttle valve for drinking water systems with a circulation pump. It regulates the water temperature in the circulation pipe and limits the amount of water circulating to the required level to ensure a constant temperature and minimise circulation losses. With an integrated thermocouple, it avoids high costs and is suitable for legionella flushing.
HERZ Water Meter Set
The HERZ Water Meter Set is the compact solution for easy water meter installation. Consisting of two shut-off valves, a backflow preventer, and a drain valve, all legally required components are combined in one product with Austrian quality. The backflow preventer built into the shut-off valve prevents water from flowing back into the primary drinking water supply. The shut-off valves are designed with a non-rising spindle including a spindle seal with double O-ring, which guarantees a reliable seal and long service life.
HERZ STRÖMAX Commissioning Valves
The HERZ STRÖMAX Commissioning Valve ensures precise flow control in individual branches, ensuring that each consumer receives the required water supply. It optimizes energy consumption in water supply systems and prevents insufficient flow or pipe overload. Available in angle and straight versions with linear or equal percentage characteristics, as well as with rising or non-rising spindle and a digital display.
HERZ System Separator
HERZ System Separators are used to separate drinking water and liquids in categories 1 to 4. They operate according to the three-chamber system: inlet, middle, and outlet chambers, each separated from the others by a backflow preventer. Under normal operating conditions, a pressure drop between the chambers prevents backflow. If the pressure between the inlet and middle chambers drops to 0.14 bar, the middle chamber is vented and any contaminated water that has been pushed back is safely discharged via the differential pressure-controlled drain valve and the drain funnel.
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