Electro-hydraulic servo valve G761-3034B is a key component in DEH control system of steam turbine. It converts electrical signal into hydraulic energy to realize accurate control of speed regulation and load of steam turbine.

The servo valve G761-3034B is a nozzle flapper type servo valve. In addition to such servo valves, jet tube electro-hydraulic servo valves are often used as hydraulic control elements in steam turbines. What is the difference between the two servo valves? Yoyik now shows you their different features.

Nozzle flapper type electro-hydraulic servo valve:

• 1. Simple structure: The structure of the nozzle baffle type electro-hydraulic servo valve is relatively simple, consisting of a torque motor, a nozzle baffle type hydraulic preamplifier stage, and a four sided slide valve power amplifier stage.
• 2. Fast response speed: The nozzle baffle type electro-hydraulic servo valve has a fast response speed and can achieve rapid control of the hydraulic system.
• 3. High control accuracy: The nozzle baffle type electro-hydraulic servo valve uses a torque motor for force feedback, allowing the valve core position to accurately follow the input signal, thus achieving high-precision control.
• 4. High output power: The nozzle baffle type electro-hydraulic servo valve has a large output power and is suitable for occasions with large loads.
• 5. Strong anti-interference ability: The nozzle baffle type electro-hydraulic servo valve has strong anti-interference ability and can maintain stable operation in harsh environments.

Jet tube type electro-hydraulic servo valve:

• 1. Small size: The jet tube type electro-hydraulic servo valve has a compact structure, small volume, and is easy to install and integrate.
• 2. Lightweight: The jet tube type electro-hydraulic servo valve adopts jet technology, reducing the weight of the valve body and making the valve lighter.
• 3. Fast dynamic response: The jet tube type electro-hydraulic servo valve has a fast dynamic response speed and can quickly follow changes in input signals.
• 4. Energy saving: The jet tube type electro-hydraulic servo valve has lower energy consumption during operation, which is beneficial for reducing system energy consumption.
• 5. Strong anti pollution ability: The jet tube type electro-hydraulic servo valve has good anti pollution ability and can adapt to harsh working conditions.

These two types of electro-hydraulic servo valves have their own characteristics and can be selected according to different application scenarios and needs.

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