ATOS proportional valve DKZA-A-173-L5/PA-M/7 in stock

Brand

ATOS/Italian Atos

ATOS proportional valves control flow in two ways: One is on/off control: either fully open or fully closed, with flow either at its maximum or minimum, without intermediate states, such as ordinary solenoid direct-flow valves, solenoid directional valves, and electro-hydraulic directional valves. The other is continuous control: the valve port can open 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 or servo valves is to achieve throttling control of flow rate electrically (of course, pressure control can also be achieved through structural modifications). Since it is throttling control, there is inevitably 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 Valve

Differences between ATOS Proportional Valves and Servo Valves

Mainly reflected in the following points:

1. Different drive devices. 1. **Differences in Driving Mechanisms:** Proportional valves are driven by proportional electromagnets; servo valves are driven by force motors or torque motors.

2. **Differences in Performance Parameters:** Hysteresis, dead zone, bandwidth, and filtration accuracy differ, leading to different applications. Servo valves and servo-proportional valves are primarily 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 at mid-position, while proportional valves do.

2.2 Servo valves have a higher frequency response, reaching up to approximately 200Hz, while proportional valves typically 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. **Differences in Valve Core Structure 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. **Differences in Mid-Position Functions:** Proportional directional valves have a neutral position function similar to ordinary directional valves, while servo valves only have an O-type neutral position function (E-type for Rexroth products).

5. The rated pressure drop of the valves differs.

DHZO-AE-073-S5/I 10

DHZO-AT-073-P3 20

DHZO-ATE-073-P3/B/DP27SB 20

DHZO-T-051-L1

DHZO-T-051-L5 31

DHZO-T-071-D5

DHZO-T-071-L5

DHZO-T-071-S5

DHZO-TE-051-L5/Y 40

DHZO-TE-071-L5

DHZO-TE-071-S5 40/PE

DHZO-TE-073-S5

DKZA-A-173-L5/PA-M/7

DKZO-A-151-S5 DKZO-A-171-L5

DKZO-A-173-S5

DKZOR-A-151-S5

DKZOR-A-151-S5/18 40

DKZOR-A-151-S5/B

DKZOR-A-153-L5/B

DKZOR-A-171-D5 40

DKZOR-A-171-L5

DKZOR-A-171-S5

DKZOR-A-171-S5/18

DKZOR-A-173-D5

DKZOR-A-173-L5

DKZOR-A-173-L5/18 40

DKZOR-A-173-L5/Y

DKZOR-A-173-S3 DKZOR-A-173-S5

DKZOR-A-173-S5/18

DKZOR-AE-171-L5 10

DKZOR-AE-171-S5

DKZOR-AE-171-S5 10/WG

DKZOR-AE-171-S5/Y 10

DKZOR-AE-173-D5 10

DKZOR-AE-173-L5 10

DKZORC-A-151-S5/18

DKZOR-T-151-L5

DKZOR-T-151-L5/Y

DKZOR-T-153-L5

DKZOR-T-171-D5

DKZOR-T-171-L5

DKZOR-T-171-S5 DKZOR-T-171-S5/Y

DKZOR-T-173-L5 40

DKZOR-TE-170-L5 40

DKZOR-TE-171-L5

DKZOR-TE-171-L5/I 40

DKZOR-TE-171-S5

DKZOR-TE-171-S5/Y

DKZOR-TE-173-L5 40

ATOS proportional valves offer performance between servo valves and proportional valves.

ATOS proportional 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 also known as on/off control. Pneumatic control systems use 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. Traditional pneumatic control systems require multiple pressure reducing valves, throttle valves, and directional valves to achieve multiple output forces and speeds. This not only increases the number of components, raising costs and complicating the system, but also necessitates manual adjustment of many components beforehand. Electro-proportional valve control is a continuous control method, characterized by output varying with input, exhibiting a proportional relationship between the two. Proportional control can be open-loop or closed-loop.

ATOS Proportional Valve Structure and Principle

When the input signal increases, the supply solenoid valve pilot valve 1 reverses, while the exhaust solenoid valve pilot valve 7 remains in the reset state. The supply pressure then enters the pilot chamber 5 from the SUP port through valve 1. The pilot chamber pressure rises, acting on the diaphragm 2, opening the supply valve core 4 connected to diaphragm 2 and closing the exhaust valve core 3, generating output pressure. This output pressure is fed back to the control loop 8 via pressure sensor 6. Here, a rapid comparison and correction with the target value is performed until the output pressure is proportional to the input signal, thus demonstrating that the output pressure changes proportionally to the input signal. Because it lacks a nozzle-baffle mechanism, the valve is insensitive to impurities and boasts high reliability.

ATOS Proportional Valve Features

1) Enables stepless adjustment of pressure and speed, avoiding the shock phenomenon that occurs when switching normally open on/off air valves.

2) Enables remote and program control.

3) Compared to intermittent control, the system is simplified, with a significant reduction in components.

4) Compared to hydraulic proportional valves, it is smaller, lighter, simpler in structure, and lower in cost, but its response speed is much slower than hydraulic systems, and it is more sensitive to load changes.

5) Low power consumption, low heat generation, and low noise.

6) Safe of fire and environmentally friendly. Less affected by temperature changes.

The company mainly deals with European and American brands and can source brands from any European country. For example, our key German brands include: BURKERT, DEMAG, HAWE, REXROTH, HYDAC, PILZ relays, FESTO, IFM sensors, E+H, HEIDENHAIN, P+F sensors, SICK, TURCK, and HIRSCHMANN industrial switches. German brands: Hengstler, Murr, Schmersal, Samson, EPRO (Emerson Group)

American brands: MOOG, ASCO, MAC, NUMATICS, PARKER, Vickers, Helón (Norgren)

Italian brands: OMAL, ATOS, CAMOZZI, UNIVER, Camozzi