Valves Gates
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Valves & Gates VAPTECH Make what the Planet Needs!

About VAPTECH HYDRO division of VAPTECH VAPTECH is a global supplier of equipment and services for hydropower and the metal forming industries. Originating in 1914 the company has its headquarters in Sofia, Bulgaria and a production facility in Pleven. VAPTECH employs more than 270 people and has deliveries worldwide. VAPTECH delivers complete electromechanical equipment for hydropower plants with main focus on turbines with high efficiency, valves, gates and automation systems. The experience in turbine production (small, medium and large) is more than 80 years and even today the complete...

VAPTECH | Valves & Gates Valves & Gates VAPTECH has a long experience and traditions in design and manufacturing of a wide variety of valves and gates. The company is offering closing and isolating structures that are developed for the specific project parameters but we have also developed standardized range of valves based on their main input and design parameters. The closing structures and their subcom-ponents are stress tested with finite elements method including the use of special software. All the production processes including welding, heat treatment, machining, surface treatment,...

VAPTECH | Spherical Valves SPHERICAL VALVES VAPTECH offers a wide range of spherical valves designed mainly for water. They are used as gates and emergency devices at the turbine inlet or at the water intakes. Spherical valves by VAPTECH are designed so that they can securely close under full flow and unbalanced pressure. Every spherical valve according to VAPTECH procedures is subjected to the following tests: Strength: under pressure 1,5 x PN Tightness: under pressure min. 1,1 x PN Functional VAPTECH provides spherical valves according to combination of the following main parameters and...

VAPTECH | Spherical Valves Standard Spherical valves by VAPTECH | Main parameters and features: Nominal diameter: From DN 250 to DN 1000 mm Direction of counterweight fall: Downstream Nominal pressure: PN40 and PN63 bar (PN100 available on request) Location of the actuation system: Left side or right side (looking from the flow direction) Water flow velocity: Max. 12m/s Number of sealings: Single (main) Opening with unequal pressure: Up to 20% Sealing method: With moveable rings actuated with water Flow direction: One-way Connection: Flanged with feet Body: Welded structure and a cover...

VAPTECH | Spherical Valves Body: Welded structure with main body integrated stationery sealing ring and bearing beds and a cover. Rotor: Welded structure with integrated groove for the stationery sealing ring and beds for installation of the shafts. Explosion of the components of VAPTECH standard spherical valve. Bearing system of VAPTECH standard spherical valve. Bearing: The radial and axial bearing of the rotor shafts are self-lubricated type. The shaft bearing bushings are type DEVA and they are inserted in stainless steel cassettes that protect from admission of hard particles. Shaft...

VAPTECH | Spherical Valves Hydraulic cylinder: Piston type PN 160, knuckle-jointly fastened to the valve body and to the counterweight arm. The cylinder bearing is self-lubricating type - Operational pressure for the oil: 70 bar - Maximum pressure for the oil: 100 bar Main sealing: A set of stationery and moveable rings made of stainless steel with different roughness. The stationery ring is installed in the rotor and the moveable ring is inserted in the downstream side of the rotor cover. The sealing rings can be replaced at site without dismantling of the spherical valve. Sealing system...

VAPTECH | Butterfly Valves BUTTERFLY VALVES VAPTECH offers a wide range of disc valves designed mainly for water. Butterfly valves by VAPTECH are designed so that they can securely close under full flow and unbalanced pressure. Every butterfly valve according to VAPTECH procedures is subjected to the following tests: Strength: under pressure 1,5 x PN Tightness: under pressure min. 1,1 x PN Functional These valves can be specified according to a combination of the following main parameters and design features: Functional testing of butterfly valve DN2400 PN6, designed for the intake chamber...

VAPTECH | Butterfly Valves Standard Butterfly valves by VAPTECH | Main parameters and features: Nominal diameter: From DN 300 to DN 1600 mm Disc: Lens Disc placement: Double displacement (double eccentric) Water flow velocity: Max. 8 m/s Actuation: Opening with a hydraulic cylinder and closing with a counterweight Opening with unequal pressure: Up to 35% difference Flow direction: One-way Direction of counterweight fall: Downstream Location of the actuation system: Left side or right side (looking from the flow direction) Connection: Flanged with feet Number of sealings: Single (main) Body:...

VAPTECH | Butterfly Valves Body: welded structure with integrated stationery sealing ring and bearing beds. Shaft sealing: safe standard seals inserted in grooves in stainless steel chambers and allow for replacement on site without dismantling of the butterfly valve. Disc: welded structure with integrated bed for the main seal and beds for attaching of the rotor shafts. Hydraulic cylinder: piston type PN 160, knuckle-jointly fastened to the valve body and to the counterweight arm. The cylinder bearing is self-lubricating type - Operational pressure for the oil: 70 bar - Maximum pressure...

VAPTECH | Plunger Valves Plunger valves are used as main valves for low and average pressure with large discharge. Their strongest advantage is the excellent throughput of the flow and its precise regulation through the whole stroke of the plunger. These valves are used as main discharge valves at dams and for flow regulation with a various application: industrial and domestic water supply, pump- and irrigation systems and so on. VAPTECH offers a wide range of plunger valves designed mainly for water. These valves can be specified according to a combination of the following main parameters...