ATOS proportional directional valve DPZO-TE-173-S5/I in stock

Brand

ATOS/Italian Atos

Differences between ATOS proportional directional valves and servo valves

The main differences are as follows:

1. Different drive devices. The proportional valve is driven by a proportional electromagnet; the servo valve is driven by a force motor or torque motor.

2. Different performance parameters. Characteristics such as hysteresis, dead zone, bandwidth, and filtration accuracy differ, leading to different applications. Servo valves and servo proportional valves are mainly used in closed-loop control systems, while other types of proportional valves are mainly used in open-loop control systems and closed-loop speed control systems.

2.1 Servo valves have no dead zone in the neutral position, while proportional valves do.

2.2 Servo valves have a higher frequency response, reaching up to approximately 200Hz, while proportional valves generally have a maximum frequency of tens of Hz.

2.3 Servo valves have higher requirements for hydraulic fluid, requiring fine filtration to prevent clogging, while proportional valves have lower requirements.

3. Different valve core structures and machining precision. Proportional valves use a valve core + valve body structure, with the valve body also serving as the valve sleeve. Servo valves and servo proportional valves use a valve core + valve sleeve structure.

4. Different types of neutral position functions. Proportional directional valves have neutral position functions similar to ordinary directional valves, while servo valves only have an O-type neutral position function (E-type for Rexroth products).

5. Different rated pressure drops.

ATOS proportional directional valves can control flow in two ways: one is on/off control: either fully open or fully closed, the flow is either at its maximum or minimum, with no intermediate state, such as ordinary solenoid straight-through valves, solenoid directional valves, and electro-hydraulic directional valves. The other is continuous control: the valve port can be opened to any degree as needed, thereby controlling the flow rate. These valves can be manually controlled, such as throttle valves, or electrically controlled, such as proportional valves and servo valves. Therefore, the purpose of using proportional valves or servo valves is to achieve throttling control of flow rate electronically (of course, pressure control can also be achieved through structural modifications). Since it is throttling control, there will inevitably be energy loss. Servo valves differ from other valves in that their energy loss is greater because they require a certain flow rate to maintain the operation of the pre-stage control circuit.

ATOS proportional directional valves are a type of proportional valve used to control flow rate and direction.

Extended Information---Automatic control of electrical proportional valves can be divided into intermittent control and continuous control. Intermittent control is on/off control. Pneumatic control systems use on/off (ON-OFF) directional valves with low operating frequencies to control the opening and closing of the air path. Pressure reducing valves regulate the required pressure, and throttle valves regulate the required flow rate. This traditional pneumatic control system requires multiple pressure reducing valves, throttle valves, and directional valves to achieve multiple output forces and multiple movement speeds. This not only increases the number of components, raising costs and complicating the system structure, but also requires many components to be manually adjusted in advance. Electro-proportional valve control is a type of continuous control, characterized by an output that changes proportionally to the input, with a certain proportional relationship between the two. Proportional control can be divided into open-loop control and closed-loop control.

ATOS Proportional Directional Valves

Proportional Directional Valves DPZO-A-271-L5/DEG

Proportional Directional Valves DPZO-A-271-L5/DEG

Proportional Directional Valves DPZO-A-273-D5/D/G

Proportional Directional Valves DPZO-A-273-D5/E30

Proportional Directional Valves DPZO-A-273-S5

Proportional Directional Valves DPZO-A-371-L5/DG

Proportional Directional Valves DPZO-A-373-D5/E30

Proportional Directional Valves DPZO-AE-171-S5/E

Proportional Directional Valves DPZO-AE-171-S5/E

Proportional Directional Valves DPZO-AE-171-S5/G

Proportional Directional Valves DPZO-AE-171-L5/E

Proportional Directional Valves DPZO-AE-173-S5

Proportional Directional Valve DPZO-AE-271-L5

Proportional Directional Valve DPZO-AE-271-L5

Proportional Directional Valve DPZO-AE-271-L5

Proportional Directional Valve DPZO-AE-273-L5

Proportional Directional Valve DPZO-AE-273-L5

Proportional Directional Valve DPZO-AE-373-S5

Proportional Directional Valve DPZ0-TE-271-L5/D

Proportional Directional Valve DPZO-L-271-L3

Proportional Directional Valve DPZO-L-273-L5

Proportional Directional Valve DPZO-LE-270-S5/G

Proportional Directional Valve DPZO-LE-271-L5

Proportional Directional Valve DPZO-LE-271-L5/D

Proportional Directional Valve DPZO-LE-271-L5/D/I

Proportional Directional Valve DPZO-TE-271-S5 40

Proportional Directional Valve DPZO-A-271-L5/DEG

Proportional Directional Valve DPZO-A-273-D5/D/G

Proportional Directional Valve DPZO-A-273-D5/E30

Proportional Directional Valve DPZO-A-273-S5

Proportional Directional Valve DPZO-A-371-L5/DG

Proportional Directional Valve DPZO-A-373-D5/E30

Proportional Directional Valve DPZO-TE-171-L5

Proportional Directional Valve DPZO-AE-171-L5/E

Proportional Directional Valve DPZO-AE-173-S5

Proportional Directional Valve DPZO-AE-271-L5

Proportional Directional Valve DPZO-AE-273-L5

Proportional Directional Valve DPZO-AE-273-L5

Proportional Directional Valve DPZO-AE-373-S5

Proportional Directional Valve DPZO-AES-PS-273-L5/IZ

Proportional Directional Valve DPZO-TE-171-L5

Proportional Directional Valve DPZO-TE-173-S5/I

Proportional Directional Valve DPZ0-TE-271-L5/D

Proportional Directional Valve DPZO-L-271-L3

Proportional Directional Valve DPZO-L-273-L5

Proportional Directional Valve DPZO-LE-270-S5/G

Proportional Directional Valve DPZO-LE-271-L5

Proportional Directional Valve DPZO-LE-271-L5/D

Proportional Directional Valve DPZO-LE-271-L5/D/I

Proportional Directional Valve DPZO-TE-271-S5 40

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