Spherical High Pressure Valve
From Hydro
Spherical valves are guarding hydraulic structures used for high pressure without any head losses when the water is passing through the rotor. They are used as gates and emergency devices at the turbine inlet or at the water intakes.
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The standard line of VAPTECH Spherical valves is d...
The standard line of VAPTECH Spherical valves is designed for diameter range from 300 to 1000 mm and pressure ratings 40, 63 and 100 bar. The valve opening is realized with a hydraulic cylinder and the closing is with a counter weight. The seal of the rotor to the valve body is realized by a movable stainless steel sealing that is actuated through a water-oil pressure system.
Outside the standard line VAPTECH develops spherical valves for a specific pressure and with diameters up to 3000 mm. The sealing system can be optionally equipped with an additional maintenance seal that, when activated, allows for inspection of the main seal without draining of the penstock water.
The valve function can be alternatively realized with a double acting hydraulic cylinder or with an electrical actuator.
Additionally the valve can be equipped with an upstream and downstream pipes, bypass system, hydraulic pressure unit and digital control system
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