valves - litostroj · 2018-03-23 · • valve obturator construction is of biplane lattice type,...
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ValvesSPHERICAL VALVES,BUTTERFLY VALVES,ENERGY DISSIPATING VALVES
Simplified yet robust design, high reliability, low maintenance costs.
The Litostroj Power Group unites tradition, experience, knowledge and the development potential of several reputable European suppliers into a new technological power.
Together we can offer investors complete solutions ranging from development and design to delivery of turnkey hydroelectric power plant equipment. Our advantage is in the know-how and experience of our employees. Our power is in our go-ahead spirit and adaptability.
www.litostrojpower.com
LITOSTROJ POWERLitostroj PowerLitostrojska cesta 50, 1000 LjubljanaSloveniaTel: +386 1 5824 102Fax: +386 1 5824 171E-mail: [email protected]
LITOSTROJ POWERLitostroj Hydro45, Pacifique EstBromont (Quebec)Canada, J2L 1 J4Tel: +1450 534 2929Fax: + 1450 534 0136E-mail: [email protected]
LITOSTROJ POWERCairo Office47, Ramses StreetP.O. Box 2370, Floor 2Cairo, EgyptTel: + 202 2575 39 75Fax: + 202 2575 35 36E-mail: [email protected]
LITOSTROJ POWERČKD Blansko EngineeringČapkova 2357/5, 678 01 BlanskoThe Czech RepublicTel: +420 533 309 560Fax: +420 533 309 557E-mail: [email protected]
LITOSTROJ POWERHydraulic Research Center BlanskoHorní Lhota 149The Czech Republic678 01 BlanskoTel.: +420 515 538 580Fax: +420 515 538 598E-mail: [email protected]
Printed: September 2016
Axial-Flow Pump Erection at Site
SPHERICAL VALVES, BUTTERFLY VALVES, ENERGY DISSIPATING VALVESSimplified yet robust design, high reliability, low maintenance costs.
Spherical valves - Main features
Used as turbine inlet valves:• Installed on penstock diameters up to 3 meters, for heads up to 850
meters of water column and flow velocities up to 15 m/s.• Due to its shape, valve obturator enables almost no disturbance of flow,
appropriate for negligible head-loss applications.• Valve sealing function is achieved with metal or soft rubber seal, where
soft seal is used mainly for lower heads. Both, metal and soft rubber seal enable drop-tight leakage of the valve.
• Valve seals may be carried out with fixed or movable seal rings.• Available with single or double seal, where maintenance seal enables
replacement of main seal without emptying the upstream penstock. Maintenance seal is applied by means of pressurized penstock water, however for additional security it is secured also mechanically.
• Valve obturator and valve body are made as welded construction of steel plates and forgings, for smaller diameters, valve obturator and valve body are made of machined forgings, whereas for larger diameters valve obturator is made as welded construction of steel plates and castings.
• Secure closing of the valve is achieved by using operating mechanism with weighted lever, whereas in tight spaces also double acting hydraulic-operated mechanism may be installed. Medium for operating the valve may be pressurized oil or water from the penstock.
Butterfly valves - Main features
Used as penstock guard valves, turbine inlet valves or maintenance valves:• Installed on penstock diameters up to 6 meters, for heads up to 250
meters of water column and flow velocities up to 9 m/s.• Valve obturator construction is of biplane lattice type, which enables
minimal disturbance of flow, thus low head losses. For low heads, single plane construction of valve disc is available.
• Valve sealing function is achieved with soft rubber or metal seal, where soft seal enables drop-tight leakage of the valve.
• Available with single or double seal, where maintenance seal enables replacement of main seal without emptying the upstream penstock. Maintenance seal is applied mechanically, for special applications may however also be applied by means of pressurized penstock water.
• For smaller diameters, valve obturator and valve body are made as welded construction of steel plates and forgings, whereas for larger diameters valve obturator is made as welded construction of steel plates and castings.
• Secure closing of the valve is achieved by using operating mechanism with weighted lever, whereas in tight spaces also double acting hydraulic-operated mechanism may be installed. Medium for operating the valve may be pressurized oil, for special applications also water from the penstock.
Energy dissipating valves - Main features
Used as flow regulating, pressure relief or energy dissipating valves:• Installed on penstock diameters up to 3 meters and for heads up to 400
meters of water column.• Jets from the valve may be released into the surrounding air, for special
applications however also under water.• Construction of the valve may be carried out as needle valve, sleeve
valve or hollow jet valve.• Valve sealing function is achieved with soft rubber or metal seal, where
soft seal enables drop-tight leakage of the valve.• Valve obturator and valve body are made as welded construction of
steel plates, for special applications also forged.
Project name DN [mm] PN [m W.C.] Year of supply Type
Khordad Dam, Iran 1400 85 1994 Hollow jetMarun, Iran 1400 140 1997 Hollow jetMarun, Iran 1400 198 1997 Needle valveAlavian, Iran 1200 100 1997 Sleeve valveMamquam, Canada 1067 185 2004 Hollow jetMola Dam, Slovenia 900 20 2004 Hollow jetLower Clowhom, Canada 900 140 2010 Hollow jetLower Baker, USA 1524 81 2011 Hollow jet
Project name DN [mm] PN [m W.C.] QN [m3/s] Year of supply
MES Extension, Iran 5600/5300 215 203,0 2004Gotvand, Iran 5600/5300 215 215,0 2004Karun IV, Iran 5000 235 172,0 2005Cariblanco, Costa Rica 2400 85 25,0 2007Besy, Canada 2200 120 25,0 2007Peruća, Croatia 3800 75 60,0 2007Mostarsko Blato, Bosnia 1600 245 18,0 2009Limberg II, Austria 4900 150 144,0 2010Sheldrake, Canada 2100 100 21,6 2013Lower Baker PP, USA 2700 100 42,5 2013Val Jalbert, Canada 2100 145 10,0 2013Linth Limmern, Switzerland 4200 120 82,0 2014Handeck 2, Switzerland 3000 140 40,0 2014Handeck 2, Switzerland 2400 160 33,0 2015Innertkirchen 1, Switzerland 2400 100 25,5 2015Big Silver Creek, Canada 1400 165 40,0 2015Handeck, Switzerland 2700 140 40,0 2015
Project name DN [mm] PN [m W.C.] QN [m3/s] Year of supply
Cariblanco, Costa Rica 1200 610 12,5 2007Perućica, Montenegro 1000 625 8,5 2007Doblar 1, Slovenia 2300 60 25,0 2012Toro 3, Costa Rica 1200 355 11,0 2013Nedre Røssåga, Norway 1600 280 22,0 2013Nedre Røssåga, Norway 1600 280 22,0 2013Vrutok, Macedonia 1200 620 8,0 2014Zakučac, Croatia 2400 280 60,0 2014Nedre Røssåga, Norway 1700 280 22,0 2015Innertkirchen 1, Switzerland 1800 815 25,5 2015Handeck 2, Switzerland 1650 560 23,0 2015