DAMS, RESERVOIRS AND HYDROPOWER VALVE SOLUTIONS

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1 GLENFIELD DAMS, RESERVOIRS AND HYDROPOWER DAMS, RESERVOIRS AND HYDROPOWER SOLUTIONS

2 GLENFIELD is a leading supplier of large diameter valves for dams, reservoirs and hydropower installations around the world. Glenfield s product portfolio includes an extensive range of: Metal seated gate valves Submerged discharge valves Free discharge valves Parallel seated gate valves for dams and reservoir applications Butterfly valves High performance recoil check valves Double orifice air valves Automatic pressure and level control valves Penstocks and sluice gates Within our vast range of capabilities Glenfield can provide a comprehensive range of engineering and site solution packages. Our specialist teams come to you to identify the perfect solution - from feasibility and site audit to network leakage management and repair. Engineering and Site Solutions: Valve, penstock and actuator: site surveys and health checks Valve supply, installation, refurbishment and replacement Design and manufacture of ancillary equipment All associated enabling, electrical and civil engineering services Equipment commissioning Scheduled maintenance and servicing Contracts Extended warranties Post contract training UK coverage 2 DAMS, RESERVOIRS AND HYDROPOWER SOLUTIONS

3 EXPECT...QUALITY FREE DISCHARGE SUBMERGED DISCHARGE NEEDLE DOUBLE ECCENTRIC BUTTERFLY MET SEAT GATE V Cast ductile or fabricated body construction for optimal performance and resistance to vibration Dual drive-screw or hydraulic mechanism designed to provide trouble-free operation Cylindrical sleeve is constructed of fabricated stainless steel with bronze guides for low maintenance Drop tight valve seating which is easily replaced Reliable design has been produced for over 60 years Cavitation free due to atmospheric dispersion Available with manual, electrical or hydraulic actuation Vertical energy dissipating valve provides quiet and precise flow control Cast ductile iron construction for optimal performance and resistance to vibration Capable of high pressure drops Can be operated in throttled position for extended lengths of time for precise flow control Customized design to suit each application, ensuring linear flow control Capable of controlling cavitation and minimizes clogging Compact and safe method of energy dissipation Drop tight valve seating Available with manual, electrical or hydraulic actuation In-line flow control valve Cast ductile iron construction for optimal performance and resistance to vibration Drop tight valve seating Can be operated in throttled position for extended periods or precise flow control pressure ratings available Capable of high pressure drops Anti-cavitation trim available Low headloss characteristics Face to face dimensions according to EN standards throughout the complete range of valve sizes Can be used for level control, turbine bypass and terminal discharge applications Available with manual, electrical, hydraulic and actuation Cast ductile or fabricated body construction for optimal performance and resistance to vibration Double eccentric fabricated butterfly valve suitable mainly for turbine protection applications. Also used in water distribution systems Designed to operate (opening, closing and emergency closing) at full flow / pressure special materials (including duplex materials for sea water) to match specific requirements and head conditions under which the valve will operate Available with hydraulic, electric or manual actuator Designed to high flow an unbalanced Operates fro position to c velocity Valve operat flow conditio Body and ga piece casting Optional acc include bypa outs, indicato channels, sc stems, and f Available wit and yoke to switches Available wit electrical act DAMS, RESERVOIRS AND HYDROPOWER SOLUTIONS 3

4 AL ED ALVE 3 AND 4 SIDED HIGH PRESSURE PENSTOCKS BONNETED GATE HIGH PRESSURE KNIFE GATE TILTING DISC CHECK operate under d considerable pressures m fully open losed under high es in bidirectional ns te are single s essories sses, cleanrs, shoe and rapers, extension loor-stands h outside stem facilitate limit h manual or uation Three and four side sealing. 4-sided closed frame design Suitable for wall mounting with a square or rectangular opening Standard size range: 150 to 2000mm, larger sizes available Fabricated stainless steel frame and slide, resilient rubber sealing with either non-rising spindle or rising spindle Flush invert available Bi-directional up to and including 1200 x 1200mm Uni-directional and bidirectional available on larger sizes Designed according to DIN Leakage allowance lower than allowable in DIN (class 5) Replaceable seals Completely enclosed rectangular port sliding gate for the isolation of flow through the outlet works of dams Robust, fabricated construction of carbon steel, with high-performance bronze or stainless steel seats May be equipped with air vent piping system to avoid cavitation and with bypass for pressure balancing special materials to match specific requirements and head conditions under which the gate will operate Available with hydraulic, electric or manual actuator Fabricated body and bonnet with robust design. Gate guiding and closure design incorporates half-wedges on the body and gate Can be manufactured with flanges of any size and to any standard special materials to match specific requirements and head conditions under which the gate will operate Available with hydraulic, pneumatic, electric or manual actuator Fabricated tilting disc non return valve designed to prevent back flow on the pressure sides of pumping systems Available with counterweight and adjustable hydraulic damping systems to prevent water slamming Available with integrated HPU to operate as a butterfly valve while opening and as a check valve while closing special materials (including duplex materials for sea water) to match specific requirements and head conditions under which the valve will operate IN EVERY STEP DAMS, RESERVOIRS AND HYDROPOWER SOLUTIONS 4

5 ENGINEERING AND SITE SOLUTIONS CASE STUDIES GLENFIELD FREE DISCHARGE SUPPLIED TO WELSH WATER DAM Ystradfellte Dam and spillway was built in It has a capacity of over 3 billion litres and a maximum height of 29m. The dam is located within the Brecon Beacons National Park in south Wales. Over the years, the spillway has suffered repeated damage due to several incidents of discharge overflow. In 2011, an inspection was completed on the reservoir and under the Reservoirs Act, it was discovered that the spillway had insufficient capacity by modern standards and required a major upgrade to pass the Probable Maximum Flood (PMF). The scour outlet has to pass flood flows of up to 7m3/s during the construction phase of the spillway to avoid flows down the spillway. In order to control these flows and provide sufficient energy dissipation, a Glenfield Series 857 free discharge valve (DN900) was selected by Dŵr Cymru Welsh Water. Glenfield Valves and Dŵr Cymru Welsh Water worked closely together to ensure the valve supplied met the system requirements. One of the key points involved in this project was to minimise the water jet spread exiting the valve so that nearby embankments were not at risk from impact erosion. Glenfield designed and supplied a remote stainless steel hood which was installed at the downstream end of the discharge valve to contain the jet of water and avoid the conical spray pattern associated with this valve type. As can be seen from pictures the water jet exiting the valve and hood is directed within the walls of the civil structure. The valve and hood were delivered in May and commissioned in August Glenfield were on-site to supervise the successful commissioning of the valve. Glenfield Valves offer a wide range of valve products for isolation, flow control and energy dissipating applications for dams, reservoirs and hydro projects. We also supply specialist radial & tilting gates, penstock sluice valves and stop logs through our partnership with Orbinox (Spain). 109 YEAR OLD GLENFIELD S REFURBISHED In 2015, during a visit by Glenfield Valves to Rio Tinto, one of the world s leading global mining and metals companies, Lochaber facility in Scotland, concern was raised over the operating function of two of the original Glenfield & Kennedy control valves. The valves in question were installed in the Kinlochleven Hydropower Plant during its original construction between 1907 and 1910 when the company was owned by the British Aluminum Co. Glenfield were asked to conduct an inspection of the valves to diagnose the problem and report on the feasibility of a refurbishment programme to return the valves to their original condition. The valves were delivered to Glenfield s facility in Kilmarnock where they were disassembled and inspected. The main components were carefully shot blasted by Glenfield in-house specialists to expose the surfaces of the raw material. As anticipated, and due to the age of the valves, the original cast steel components showed signs of erosion caused by natural wear and tear over 100 plus years of operation. The before picture shows the extent of this erosion. On further inspection, it was determined that one of the main valve bodies had also been subjected to considerable erosion and was therefore deemed to be beyond economic repair. Utilising the historical design drawings, Glenfield were able to produce a 3D CAD model of the valve body to create a new casting pattern. The pattern was produced in the UK with the subsequent steel casting also being produced within the UK. All of the castings were then machined to the original valve dimensions. All non-metallic components were replaced and other components, including the high pressure spring assembly, were reconditioned and returned to the required high quality standard. This included full epoxy coating of all internal and external metallic surfaces. The valves were then reassembled and successfully hydrostatically tested by experienced GVL engineers to the original working pressures. The most important aspect of this test is to ensure that the springs are set to a specific blow-out pressure to ensure the hydropower system safety. Both valves have been reinstalled into the main pipeline and are working just as they did over 100 years ago. Before During After DAMS, RESERVOIRS AND HYDROPOWER SOLUTIONS 5

6 IN DAMS, RESERVOIR AND HYDROPOWER APPLICATIONS, GLENFIELD BRINGS TOGETHER THE WORLDS STRONGEST BRANDS GLENFIELD Valves Limited Sales and Technical Engineering Support Lifeways House. 22 Shaw Road. Prestwick, Ayrshire, KA9 2LP United Kingdom T: +44(0) E: W: GLENFIELD Valves Limited Service Centre and Warehousing Queens Drive, Kilmarnock, Ayrshire, KA1 3XF United Kingdom T: +44(0) E: W: Members of the group DR&HS FEB 2017 Group A/S 2017