ATOS proportional valve DPHE-2631/2/D-X24DC in stock
$302.60
The working principle of the Italian ATOS proportional valve: When the input signal to the ATOS proportional valve increases, the pilot valve 1 of the supply solenoid valve switches direction, while the exhaust solenoid 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 pressure in the pilot chamber rises, and this pressure acts on the diaphragm 2, causing the supply valve core 4 connected to diaphragm 2 to open, while the exhaust valve core 3 closes, generating output pressure. This output pressure is fed back to the control circuit 8 via pressure sensor 6.
Brand
ATOS/Italian Atos
ATOS Piston Pumps, ATOS Gear Pumps, ATOS Axial Piston Pumps, ATOS Vane Pumps, ATOS Hydraulic Cylinders, ATOS Relief Valves, ATOS Proportional Valves
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 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 electronically (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.
Differences between ATOS proportional valves and servo valves:
The main differences are as follows:
1. Different drive devices: Proportional valves are driven by proportional electromagnets; servo valves are driven by force motors or torque motors.
2. Different performance parameters: 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 at mid-position, while proportional valves do.
2.2 Servo valves have a higher frequency response, reaching 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 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 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 valves have performance between servo valves and proportional valves.
ATOS proportional valves are a type of proportional valve used to control flow rate and direction.
ATOS Proportional Valve 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 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 defined ratio between the two. Proportional control can be open-loop or closed-loop.
ATOS proportional valve features:
1) Enables stepless adjustment of pressure and speed, avoiding the shock phenomenon that occurs when switching normally open on/off valves.
2) Enables remote and programmable control.
3) Simplifies the system and significantly reduces the number of components compared to intermittent control.
4) Compared to hydraulic proportional valves, it is smaller, lighter, simpler in structure, and lower in cost, but its response speed is much slower and it is more sensitive to load changes.
5) Low power consumption, low heat generation, and low noise.
6) Does not cause fires and does not pollute the environment. Less affected by temperature changes.
ATOS proportional valve
DHZO-AE-071-S5/I
DHZO-AE-073-D5/I/10
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 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
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