ATOS proportional directional valve LIQZP-LES-SN-NP-402L4/I
$367.00
ATOS proportional directional valves suffer from high energy consumption, susceptibility to malfunction, poor contamination resistance, and high price, among other issues. However, they offer only one advantage: the highest dynamic performance among all hydraulic valves. This single advantage necessitates the use of servo valves in many applications with high dynamic performance requirements, such as aircraft and rocket steering systems and turbine speed control. For applications with lower dynamic requirements, proportional valves are generally the preferred choice.
Brand
ATOS/Italian Atos
ATOS Gear Pumps, ATOS Axial Piston Pumps, ATOS Vane Pumps, ATOS Hydraulic Cylinders, ATOS Relief Valves, ATOS Proportional Valves
ATOS proportional directional valves offer performance between servo valves and proportional valves.
ATOS proportional directional valves are a type of proportional valve used to control flow rate and direction.
Extended Information---Automatic control of electro-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, but also requires many components to be manually adjusted in advance. Electro-proportional valve control is a type of continuous control, characterized by the output changing with the input, and a certain proportional relationship exists between the output and input. Proportional control can be divided into open-loop control and closed-loop control.
ATOS Proportional Directional Valve Structure and Principle
When the input signal increases, the pilot valve 1 of the supply solenoid valve switches, while the exhaust solenoid pilot valve 7 is 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, and the air pressure acts on the diaphragm 2, causing the supply valve core 4 connected to diaphragm 2 to open, and the exhaust valve core 3 to close, generating output pressure. This output pressure is fed back to the control loop 8 through the pressure sensor 6. Here, a rapid comparison and correction is performed with the target value until the output pressure is proportional to the input signal, thus achieving a proportional change in output pressure to the input signal. Because there is no nozzle-baffle mechanism, the valve is insensitive to impurities and has high reliability.
ATOS Proportional Directional Valve Features
1) Enables stepless adjustment of pressure and speed, avoiding the impact phenomenon during switching of normally open on/off valves.
2) Enables remote control and program control.
3) Compared with intermittent control, the system is simplified, and the number of components is greatly reduced.
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 that of a hydraulic system, and it is more sensitive to load changes.
5) It uses less power, generates less heat, and produces less noise.
6) It will not cause a fire and will not pollute the environment. It is less affected by temperature changes.
ATOS Proportional Directional Valve Models:
Proportional Directional Valve DPZO-A-271-L5/DEG
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-AE-171-S5/E
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-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 DPZO-AE-373-S5
Proportional Directional Valve DPZO-AES-PS-273-L5/IZ
Proportional Directional Valve DPZO-TE-173-S5/I
Proportional Directional Valve DPZO-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-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 DPZO-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 DHZO-A-071-S5
Proportional Directional Valve DHZO-A-073-D5
Proportional Directional Valve DHZO-A-073-D5/18
Proportional Directional Valve DHZO-A-073-L5
Proportional Directional Valve DPZO-A-251-D5/
ATOS proportional directional valves can control flow in two ways: one is on/off control: either fully open or fully closed, with flow either at maximum or minimum, without intermediate states, 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's 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.
Our company mainly deals with European and American brands and can source brands from any European country. For example, our leading 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, ROSS
British brands: Norgren
Italian brands: OMAL, ATOS, CAMOZZI, UNIVER, Camozzi
