Water waste & water technology

Industrial valves for
water & waste water technology

When water flows out of the taps in Austria’s second largest city, then on the 76.5 km long journey through the drinking water pipeline from the Hochschwab region, it has passed a series of pipe rupture valves (butterfly valves) from our manufacturer Erhard. But not only Graz, also other municipalities rely on our valves, which are suitable for drinking water and certified for water production and treatment, water distribution and industrial water supply.

For 100% tightness even under the greatest dynamic loads, we prefer to use products such as gate valves and butterfly valves in the drinking water sector instead of knife gate valves. Corrosion protection and clean water are guaranteed due to epoxy resin and enamel coatings as well as a special design.

Flowtec valves are also used in other areas where water is used as a medium, such as in hydropower plants, in desalination plants, in the waste water industry in municipal and industrial areas, in the fresh water supply and in municipal sewage treatment plants.

Those who rely on exceptional longevity and reliability throughout the entire water cycle rely on the comprehensive solutions from Erhard.

Clean work
in the waste water industry

Especially in the waste water sector, in sewage treatment plants and other processes with contaminated and chemically aggressive media, it is important, even more than in other areas, that absolute tightness is guaranteed at critical points such as on lines in maintenance walkways, shafts or at transitions between different process steps.
A long service life as well as the reliable opening and closing of the shut-off butterfly valve even after it has not been used for a longer period of time are requirements of our customers. Simple and fast maintenance or repairs are also an important criterion.

We not only want our products to work cleanly, but also that our customers can work in a clean environment.

Just a few clicks to your desired standard product.

Our product finder will help you find the valve you need.

Not found the right one? Our diversity goes much further and our sales representatives will provide comprehensive consulting on individual solutions.

Sometimes you have to
let off pressure.
Big hydro solutions.

While most water applications operate at low pressure ranges, the big hydro sector is characterised by extremely high pressure ranges and overpressures. The reduction of excess energy is an industry-specific challenge.

That is why we pay particular attention to an optimum choice of valves. For example, fixed cone valves must meet very special requirements with respect to energy reduction as part of the controlled discharge of the reservoir. The energy is converted by means of umbrella-like atomisation, cavitation and vibration problems are avoided and therefore buildings are protected.

Salt applications need increased corrosion protection

Stainless steel is also not safe from corrosion if it is permanently exposed to aggressive media, such as salt, for example in desalination plants. For environments of this type we therefore offer high-quality materials, such as Superduplex, with which corrosion doesn't stand a chance.

Our topseller for the water & waste water technology

Bi-directional knife gate valve

“The gate valve model EB from Orbinox is a bi-directional wafer type knife gate valve.

The knife gate valve was designed for waste water treatment applications.

The design of the housing and seat ensures blockage-free shut-off when using suspended solids in many areas.”

DIN flanged ball valve, short pattern, floating

"The JC Valves flanged ball valve type 516 / 540 is a floating ball valve according to DIN with a short DIN face to face length. The standard version of the ball valve includes a anti-blow out stem, an antistatic device, a pressure balancing cavity hole and a ""live loaded"" packing. A large selection of materials makes the soft seated, floating DIN flanged ball valve flexible to use. With a wide range of approvals (Fire Safe, Fugitive Emission, ATEX, TRCU, CRN, SIL 3, and many others), it can be used in virtually all industries. "

Ball check valve

The Erhard ball check valve offers backflow protection based on the ball check valve operating principle. In the open position, the sealing ball is pushed out of the flow cross-section by the medium. The Erhard ball check valves are particularly suitable for use in the waste water sector where there is a high risk of clogging. Advantages: Erhard ball check valves are resistant to dirt and are extremely maintenance-friendly as the valve works without mechanically moving parts. In addition, the ball check valve has low flow resistance in the open position.

Metal seated DIN gate valve

"Metal seated RT Valvole gate valves in cast design are used when minimal pressure drop and/or a bi-directional ON/OFF operation is required. All standard gate valves have a ""full bore"" because the wedge is completely retracted in the open position. This ensures minimal pressure drop. Design: * The housing material is made of cast steel. * The valves have a bolted or pressure seal bonnet (for higher pressure) to achieve minimal turbulence and flow restrictions. * Fixed, flexible or split wedge types are available."

Wafer type swing check valve

The check valve CSC / CSCF offers efficient performance in a small space. A robust shaft and a defined end stop guarantee an above-average service life. The angled shaft seat ensures improved seat tightness even at low pressures. The valve can also be equipped with a spring that supports the closing process. The large number of turns of the optional spring prevents overloading and guarantees long-lasting durability. The check valve CSC / CSCF can be used in all industrial processes with liquids, gases and steam.

DIN safety relief valve high pressure

"Threaded high-pressure safety valve. Readily available for quick delivery and suitable for use in very demanding industries. Available with a female thread connection BSP or NPT and can be used up to a pressure rating of PN 100. The valves can also be equipped with other additional options. Because of a big stock of different kind of valve bodys and many different trims, nothing stands in the way of quick deliveries. Various approvals ensure that these valves are also used in very demanding industries."

Metal seated, DIN flanged ball valve, long/short pattern, floating

"The JC Valves ball valve type 3516 / 3540 / 3316 / 3340 is a floating ball valve with a metal seal. It can be designed in both a long or short DIN face to face length. The standard version of the ball valve includes a anti-blow out stem, an antistatic device, a pressure balancing cavity hole and a ""live loaded"" packing. A large selection of materials makes the metal seated, floating DIN flanged ball valve flexible to use. With a wide range of approvals (Fire Safe, Fugitive Emission, ATEX, TRCU, CRN, SIL 3, and many others), it can be used in virtually all industries. "

3-piece ball valves

The ICP Valves 3-piece ball valves have a 3-piece nody and are made of stainless steel, in a floating version with a full bore valve design. Connections: - KH 140: Thread according to DIN 259/2999 (GAS) - KH 141: Thread according to ASME B1.20.1 (NPT) - KH 142: Socket weld ends according to ASME B16.11 & DIN 3239 part 2 - KH 143: Butt weld ends according to ASME B16.25 & DIN 3239 part 1 Marking: CE - PED PN63 (up to 2”) / PN25 (2½“-4“)

DIN safety relief valve

Flanged safety valve for the low and high pressure range according to DIN. For a very huge range of applications. The Tosaca safety valve DIN 1400 is available in different materials and designs and can therefore cover an extreme range of applications. Because of a big stock of different kind of valve bodys and many different trims, nothing stands in the way of quick deliveries. The valves can also be equipped with other additional options. Various approvals ensure that these valves are also used in very demanding industries.

DIN on/off and control globe valve, "stellite" version

"Shut-off control valve with a Stellite seat and a pressure balanced cone (from DN200) as well as linear flow characteristics. Available with a gland seal or bellows seal. For nominal diameters from DN15 - DN400 Can be used in temperature ranges of -60°C to +550°C depending on the choice of material."

Uni-directional high performance knife gate valve

"The knife gate valve type HK from Orbinox is a uni-directional wafer valve for general industrial applications. The gate valve can be used for consistencies up to 5%. The design of the housing and seat ensures blockage-free shut-off when using fibrous media and media containing solids in many industrial sectors. The cast sealing ring system (type K) improves the tightness and makes it easier to change seals."

Uni-directional knife gate valve

"The standard knife gate valve type EX from Orbinox is a uni-directional wafer valve. It is suitable for general industrial applications. The design of the housing and seat ensures blockage-free shut-off when using suspended solids in many industrial sectors."

4-offset-eccentric metal seated high performance Quadax butterfly valve

"Thanks to its four offset eccentric design and state-of-the-art manufacturing technology, the Quadax valve meets the highest tightness requirements in 100% of cases. Due to the innovative design principle, even extreme temperatures ranging from –270°C to 800°C are not a problem. The output cone used on the butterfly is elliptical. The section under a particular angle results in a circular and therefore larger sealing area. As a result, the four offset eccentric high-performance valve is friction-free, has higher Kv values and with absolute tightness. Available in double flange, lug type, butt weld, gate valve replacement and top entry"

Double eccentric butterfly valve

The double eccentric butterfly valve ROCO wave is designed for water applications. The valve is characterised by high energy efficiency, a flow-optimised design, minimal pressure losses and continuous corrosion protection. The connection between the shaft and valve disc is covered by a polygon connection. The double eccentric butterfly valve has a modular actuator concept through the use of a handwheel, electric actuator, stem extension, weight-loaded hydraulic actuator, pneumatic actuator or chainwheel.

DIN/ANSI forged trunnion design, soft/metal seated, flanged ball vale

"The JC Valves ball valve series 6000 and 7000 are flanged trunnion ball valves according to ANSI or ANSI but with a DIN flange. They can be designed as both soft and metal seated valves. The standard version of the soft or metal seated flanged ball valve in trunnion design includes a anti-blow out stem, an antistatic device, a pressure balancing cavity hole and a ""live loaded"" packing. A large selection of materials makes the ball valve even more flexible. With a wide range of approvals (Fire Safe, Fugitive Emission, ATEX, TRCU, CRN, SIL 3, and many others), it can be used in virtually all industries. "

Non slam nozzle check valve

ERHARD nozzle check valves are designed for universal use and are particularly economical check valves for untreated and potable water as well as purified waste water due to their design. Special features include the ultra-low pressure loss due to optimised flow cross-sections, a flow-efficient valve disc and valve stem gasket, as well as optimum hydraulic behaviour with short closing travel to minimise pressure surges.

Control valve

ERHARD control valves type RV are designed for throttling and regulation in water treatment and water distribution plants as well as in hydropower plants. The slotted bush also provides optimum flow behaviour for harmless energy conversion. The control valve is ideally suited for continuous operation during cavitation. The ERHARD control valve is available with a handwheel, electric actuator, hydraulic or pneumatic piston actuator. A straight or angle version is possible.

Wafer / lug type butterfly valve

The TTV centric flanged / double flanged butterfly valve is available in a wide range of materials. Depending on the application, the seats are available in the most common material EPDM or NBR, but also in different types of silicone, Hypalon, Nordel, Viton and many others. Suitable for all industries and the most diverse applications due to the different choice of seats. Depending on the application, available in the most common material EPDM or NBR and in different types of silicone, Hypalon, Nordel, Viton and many others.

Nozzle check valve CST streamLiner - ChemValve-Schmid

Nozzle check valve streamLiner

The flow-optimised ChemValve-Schmid check valve increases energy efficiency, reduces pressure loss and lowers operating costs. Furthermore, the seated valve body prevents the valve from tilting and therefore increases the service life of the valve. The valve is highly sensitive to changes in flow due to its special design, which in turn has a positive effect on hydraulic shocks. Installation is simplified for all common international flange types due to the housing design.

Customised-solutions

Customised-solutions