Everyone who plans, builds or operates water supply systems attaches great importance to efficiency and permanent reliable function of all components. Read more
The term of water treatment comprises physical, chemical and biological processes depending on the substances contained in the raw water to be treated. Read more
High-capacity, single-chamber air valve with triple function for venting and releasing air in pipelines as well as for releasing air during operation. Special tamper resistant strainer and bonnet design according to DIN standard. Read more
Over many decades, water distribution networks are exposed to permanent strain, e.g. by frost, road traffic, earth movements and water pressure. The consequences are material fatigue, cracks, leakage – and thus water losses. Read more
They are mainly used for drinking water supply, flood protection, service water supply to industry and agriculture and the generation of energy. Read more
Everyone who plans, builds or operates water supply systems attaches great importance to efficiency and permanent reliable function of all components. In this respect, valves assume decisive tasks. They control and automate pressure and flow and protect pipelines, pumps and other components from damage. In the water industry, valves are exposed to considerable stress such as high water pressures, extreme temperatures, desert or tropical climates. The valves installed have to meet the following requirements: material, technology and quality have to be perfect and it needs to be ensured that the valves function reliably even after decades of service. A long service life means economic efficiency.
VAG belongs to the most experienced providers of solutions for water distribution. We have been developing valves for the water industry for decades. Wherever water is treated, extracted, stored and distributed, VAG solutions play an important role. There are hardly any waterworks, pumping stations or waste-water treatment plants that do not use VAG valves.
Taking water of good quality from its source to the consumer is a complex task. To meet the challenges of this task, VAG has one of the world’s most comprehensive product ranges. It includes gate valves and VAG EKN® Butterfly Valves, VAG DUOJET® Air Valves, control valves such as the VAG RIKO® Plunger Valve, hydrants, tapping bridges and innovative solutions such as the VAG BAIO®plus or VAG TERRA®lock System.
The term of water treatment comprises physical, chemical and biological processes depending on the substances contained in the raw water to be treated. In drinking water treatment plants, filter plants, sea water desalination plants or pumping stations valves control pressure and flow, shut off water in a targeted manner and protect pumps and pipelines. While for consumers clean water is a matter of course, we know about the complexity of these processes and the requirements for the quality of drinking water.
Benefit from our experience in water treatment. We provide expert advice to you on materials, design or actuators. At VAG you will find innovative and proven solutions whose details prove themselves in practice. VAG RIKO® Plunger Valves perform control tasks with absolute reliability, carrying out over 450,000 closing cycles without any failure of function. For sea water desalination plants, we supply valves whose parts coming into contact with water are either rubber coated or made entirely of stainless steel.
Today you make the decision on the quality requirements for a plant that will have to be profitable in the long run. Our experience shows that quality pays off. In desludging processes, the VAG ZETA® Knife-Gate Valve scores a point by its wide seal with a particularly precise closing behaviour. VAG EROX® Penstocks excel due to their extreme operator friendliness and ease of assembly. Premium-quality materials make the VAG EKO®plus Gate Valve corrosion proof and maintenance free.VAG is the world’s leading provider of solutions for water treatment, featuring a product range that covers virtually any application, and world-wide service. Whatever requirements you may have – we will be able to meet them and to realise even large-scale projects within a short time.
High-capacity, single-chamber air valve with triple function for venting and releasing air in pipelines as well as for releasing air during operation. Special tamper resistant strainer and bonnet design according to DIN standard. Corrosion-proof due to stainless steel inner parts (in size DN 50, inner parts made of plastic). Safe and reliable operation even at high air-release velocities of up to sonic speed. Suitable for use in water treatment, water distribution, in dams, power plants and in industry.
Over many decades, water distribution networks are exposed to permanent strain, e.g. by frost, road traffic, earth movements and water pressure. The consequences are material fatigue, cracks, leakage – and thus water losses. The major part of the losses is not caused by large pipe bursts but by the great number of minor leaks. According to experts’ estimates, about one third of the available drinking water resources is lost while the water is being transported to the end consumer. This results in enormous financial losses. Additionally, the scarcity of valuable drinking water becomes worse in dry regions. If world-wide losses could be halved, this alone would make the drinking water supply of an additional 90 million people possible.
Trying to detect and eliminate all leaks can usually neither be realised nor financed. And if, besides that, a part of the leaks is eliminated, the pressure exerted on the remaining ones rises and increases the loss there.
VAG Pressure Management deals with precisely the opposite: It reduces the water pressure in the pipeline network in dependence of demand or consumption periods.
VAG is one of the pioneers in the field of pressure management and offers a complete solution consisting of planning, consultation and implementation. The customer benefits of the VAG pressure management solution have already been demonstrated in a number of projects. As many as one million cubic metres of drinking water were saved within one year.
Pressure reduction, pressure retention and level control in one valve are offered by the VAG PICO® Pilot-Operated Control Valve. The VAG RIKO® Plunger Valve precisely controls the pressure and volumetric flow rate in smart water networks and thus ensures uninterrupted water supply. As one of the leading companies in the water industry, VAG combines proven products with engineering and practical knowledge. As a result, you will receive a solution package designed and manufactured to your individual needs. Guaranteed!
Externally controlled control valve with annular flow cross-section for the continuous regulation of high pressure differences and flow rates. Long service life as the bearings do not come into contact with the medium. Wear-resistant, corrosion- and infiltration-proof guide rails due to hard-facing. This ensures low operating forces and prevents jamming of the piston. Suitable for use in water treatment, water distribution, in dams, power plants, industry and in pressure management.
To control cooling circuits. To open and close inlets and outlets.
In power plants a wide range of valves is used. VAG valves can also be found in a power plant’s frequently extensive peripheral systems: In the cooling-water inlet and outlet structures penstocks are installed because ruggedness and a high degree of tightness are asked for here. Butterfly valves protect the water supply of the pumping stations and the downstream pipelines. In combination with a brake-and-lift unit they are indispensable for the protection of the valuable main cooling water pump. Whether as customised types for district heating pipelines or in man-sized dimensions with accident prevention safety interlock – butterfly valves can be found everywhere in the system thanks to their versatility. Plunger valves allow the precise control of the flow rate and the pressure of the water discharged. Hydrants, whether of the conventional or the underground types, ensure immediate access to water for fire fighting by the fire brigade and security staff. Air valves ensure speedy pressure compensation of the feed- and exhaust air in fire-water systems.
As a pioneer in valve technology, VAG makes an essential contribution to the evolution of rugged and safe valves. Because in the cooling system of large-scale steam power plants reliability and safety have absolute priority.
In the cooling-water or district heating system. In pumping stations or storage tanks. For fire-fighting systems or water treatment plants. In all those areas of power plants, diverse valves are used. The VAG EKN® Butterfly Valve offers reliability, quality and durability. The VAG CEREX® Butterfly Valve is the suitable valve for treatment plants and fire-water pipelines. By its patented system, the VAG EROX® Penstock ensures absolute tightness when it is used to shut off cooling tower wells and inlet channels. You will receive all these valves from one single source of supply – VAG.
Industry is the world’s second largest consumer of water. In many industrialised countries, industrial companies account for up to 80% of the demand for water. Efficient water supply and treatment is not only needed by the chemical, steel, surface mining or paper industries for their production processes. Almost all industrial operations need economic and customised solutions for drinking water, cooling water, fire-fighting systems and waste-water treatment.
VAG is a provider of solutions. We see ourselves as a partner of industry as well as of planners and companies in infrastructure and media supply. Our range of products and services, procedures, documentation and delivery times are tailored to the typical needs of industry. We have virtually all country- and industry-specific certifications and approvals as well as the expertise and human resource capacities that enable us to carry out maintenance work during plant downtimes according to schedule.
The materials and design of valves used with drinking water have to meet requirements different from those that apply to deionised water or waste water. The VAG CEREX® 300 Butterfly Valve is suitable for use in diverse process lines. VAG SKR Slanted-Seat Tilting-Disk Check Valves prevent loud slamming of the disk and destruction of pipelines and foundations. VAG NOVA 150 Standpost Hydrants protect modern industrial plants in case of fire. Thanks to our wide range of products, we are able to supply suitable valves – also in individual sizes.
World-wide there are about 45,000 dams. They are mainly used for drinking water supply, flood protection, service water supply to industry and agriculture and the generation of energy. To prevent dam breaks or the uncontrolled overflow of the water dammed up, almost all of today’s dams are equipped with a bottom outlet. Its structure depends on the design capacity of the dam and is calculated based on the volume of the storage basin and its tributaries and discharge quantities. Valves are used to open, close and control the bottom outlet.
From the inlet and safety valve, the air valve up to the control valve and overflow device. Also as customised solution or specially made valve. VAG offers all this valves from one single source of supply. The design for pressure and flow rate is developed and fine-tuned by our engineers. As a result, you will receive a unique valve designed and manufactured to your individual needs. Guaranteed! Because with our experience from over 100 years of company history, we stand for the quality and durability of our products for the entire water industry.
VAG offers products and solutions for almost all fields of application. With our extensive portfolio – especially in the area of dams and hydropower stations – we deliver tailor-made solutions that nobody else is able to supply. Our products range from the VAG RGT Roller Gate or VAG TGT Tainter Gate, the VAG Spring-Loaded Air Valve up to the VAG KSS Hollow-Jet Discharge Valve or the VAG RIKO® Plunger Valve. Also available as special solution or customised valves – perfectly tailored to your needs and your project.
As oil prices keep rising, natural gas is of increasing importance in energy supply. According to reports by the International Energy Agency, the demand for natural gas will rise most significantly in the coming years compared to other fossil fuels. In industry as well the importance of natural gas is increasing due to new combined gas and steam plants. Biogas as well is becoming increasingly important. Biogas is available in different temperature ranges. For these requirements, specially designed valves have to be used.
Valves for gas applications – like all other valves – have to be reliable, absolutely tight and safe in operation. VAG valves have been confirmed to have these properties by according examinations and approvals by authorised independent test institutes. The valves are in conformance with the applicable European Standards and have further important approvals.
VAG manufactures a wide range of gas valves for medium- and high-pressure applications. They range from butterfly valves, such as the VAG EKN® Butterfly Valve for large long-distance and industrial pipelines, to gate valves, such as the VAG EKO®plus Gate Valve and ball valves, such as the VAG JMA ALFA Intermediate Flange Ball Valve up to very small valves for house connections. Depending on the requirements it has to meet, each VAG valve can be combined with various actuators: electric, pneumatic or mechanical actuators.You can purchase the entire valve range for gas networks and gas installations from one single source of supply – VAG. As a result, you will receive a solution package designed and manufactured to your individual needs.