ATOS proportional valve DPZO-TEB-SN-NP-273-S5/DE

Brand

ATOS/Italian Atos

Differences between Italian ATOS proportional valves and servo valves:

Mainly in the following aspects:

1. Different drive devices. The drive device for proportional valves is a proportional electromagnet; the drive device for servo valves is a force motor or torque motor;

2. Different performance parameters. Characteristics such as hysteresis, dead zone, bandwidth, and filtration accuracy differ, thus their applications differ. 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 at mid-position, while proportional valves do;

2.2 Servo valves have a higher frequency response (response frequency), up to around 200Hz, while proportional valves generally have a maximum frequency of tens of Hz;

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

3. Different 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. Different 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.

Proportional servo valves have performance between servo valves and proportional valves.

Italian ATOS proportional valves can control flow in two ways: one is on/off control: either fully open or fully closed, the flow is either 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 flow throttling control 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.

Italian ATOS proportional valve models:

DHZO-AE-073-S5 10

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 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