WASSERSPIEGEL
20Pages

ENVIRONMENTAL PROTECTION Transparent Gold from the "America Egge" – water reserves from the groundwater lake Page 16 New Year – New Product The Düker tapping valve with sliding disc Page 04 Think as a System NOVO-Socket System Pa

DEAR READERS, Welcome to the second edition of our clients' magazine "Wasserspiegel" – the first edition to be published in English language. "Wasserspiegel" simply means water surface, but the second part of the word, "Spiegel" means mirror and of course hints at other magazines with that name. reports and concrete ideas for your day-to-day business in the "Wasserspiegel" magazine. In this edition, the Novo push-in system - comprised of valves, standard and special fittings as well as thrust-resistant joints for various pipe materials - shows off its assets: speed, economy of space and...

PRODUCT INNOVATIONS A LOOK AHEAD A NEW YEAR – A NEW PRODUCT Developing products, optimising products, fulfilling clients' requirements, being innovative and attractive, creating competitive and sustainable solutions – all these are our targets! Based on this statement we would like to present you one of our new developments in the valve product range: A compact, sturdy construction for pressure drilling. Maximum diameter of the drill: D = 38 mm; for potable water. DURABLE ALL-AROUND CORROSION PROTECTION WITH DÜKER ETEC ENAMEL Low design, inferior flow resistance, easy operation, reliable...

DÜKER QUICK With telescopic stem extension set Düker Quick, or as an option connection GW 336. SPECIALTIES – AN INNOVATIVE SEALING PRINCIPLE, NON-SENSITIVE TO DIRT • Gliding disc made of stainless steel, fully rubberised. • No residual water – maximum hygiene. Installation of telescopic stem extension. Left: GW 336. Right: Düker Quick. Detail Düker Quick – without pinning. TOP FIX TYPE 1014 Connection 1 ½“ internal thread TOP DREHFIX TYPE 1014 TURNABLE 360 DEGREES – COMPLETELY FREE PASSAGE • Outlet plug-in fitting „Push Fit“ – connect PE pipe direct into the valve • or pre-mounted PE outlet...

PRODUCT INNOVATIONS THINK AS A SYSTEM DÜKER OFFERS NOT JUST PRODUCTS, BUT COMPLETE SOLUTIONS. Water transport and distribution pipelines are an integral unit consisting of pipes, fittings and valves. Unlike pipes and fittings, valves are even nowadays often preferred with flanges. It still seems to appear absurd to lay socket valves, as in the past gate valves and hydrants used to be considered the most insecure components of the net. They had to be easily exchangeable. 6

Based on the practical experience with TYTON® SIT® and on the ideas, requests and requirements of the users, a further connection was developed with a two-chamber system: However, this argument is losing its validity, since the design and materials of valves have undergone vital and successful improvements. · · · · · General manufacture of pressure-loaded parts in spheroidal cast iron Corrosion protection with the unsurpassed compound material enamel Stems made of stainless steels Stem sealing secured with O-rings Sealing elements made of high-quality non-ageing elastomers NOVO-SIT® THE...

PRODUCT INNOVATIONS THE PRINCIPLE IS ANALOGUE TO THE NOVO-SIT® JOINT FOR CAST IRON PIPES. This innovative joint technology covers the complete application areas of TYTON® SIT®/TYTON SIT PLUS® on fittings and valves and expands it by its usability for alternative pipe materials: The TYTON® chamber is equipped with the sealing ring type GKS. This special "cast iron – plastic – ring" bridges the gap between the differing pipe outside diameters of plastic and cast iron pipe. The pre-chamber of the Novo socket is used for the thrust-resistant ring made of high-strength plastic. This ring consist...

Another useful option for the connection of PE-HD pipes is the PE welding spigot, which can be installed with the NOVO-SIT® joint. The segments lock on the surface of a stainless steel ring around the PE welding spigot. Practically without effort, the valves and fittings are adapted to diameters ø 90 up to ø 335 mm. PE welding spigot A COMPLETE SYSTEMS WHICH CREATES NEW PERSPECTIVES IN PIPELINE CONSTRUCTION! The innovative modular system offers adequate solutions for many applications, due to the multiple possibilities based on one universal socket for valves and fittings. SOME OF THE...

PRODUCT INNOVATIONS OPTIMISATION IS THE STIMULUS FOR INNOVATION THE NEXT GENERATION OF BUTTERFLY VALVES MADE BY DÜKER VALVE DISC flow-optimised with computer-aided flow simulation CFD. The new disc shape guarantees optimum stability, minimum pressure loss as well as excellent protection from cavitation. The double eccentric, resilient seated Düker butterfly valves type 451 with slider crank gearbox have been in use worldwide for decades. With their body made of ductile iron, enamelled in series for corrosion protection, they fulfil their tasks constantly and reliably in the most various...

BEARING Bearing bushes made of special bronze guarantee excellent emergency running properties. They are highly wear-resistant and show excellent behaviour regarding surface pressure and friction coefficients. adjustable and, if necessary, exchangeable without trouble. This system obtains a controlled and appropriate pre-tension of the sealing. Even in case of high gap velocities, there is no danger for the sealing to be drawn out. CONNECTION BETWEEN VALVE DISC AND SHAFT A square plug-in connection is clearance-free and ensures optimal transfer of turning moments. This construction makes it...

PRODUCT INNOVATIONS THE NEW SELF-LOCKING SLIDER CRANK GEAR – A DÜKER STANDARD The self-locking slider crank gear developed by Düker has been used universally as a standard since the beginning of the butterfly valve manufacture. Sturdy, powerful and reliable for easy and safe operation against a differential pressure up to the nominal pressure. THE PRINCIPLE The special movement kinematics of the Düker slider crank gear are adapted optimally to the torque requirements of the Düker butterfly valve. The torque curve is not linear as it would be the case for a worm gear drive, but it increases...