VICKERS proportional directional valve

VICKERS proportional directional valve565376 KFDG4V-3-2C20N-Z-M-U1-H7-20 in stock

Proportional valve is a new type of hydraulic control device. On ordinary pressure valves, flow valves, and directional valves, proportional electromagnets are used instead of the original control parts to continuously and proportionally control the pressure, flow rate, or direction of oil flow remotely based on the input electrical signal. Proportional valves generally have pressure compensation performance, and the output pressure and flow rate can be unaffected by load changes

VICKERS proportional valve
The adjustment of gain, spool dead zone compensation, and bias settings ensures good repeatability between valves.
The only electrical input required is the power supply(24V) and a command signal with a voltage of ± 10V. The amplifier is installed in a sturdy manner
The metal cover is sealed to prevent water or other fluids from entering. Electrical connections are made through standard7-pin plug implementation.
The pin of the valve core position detector enables electrical detection of the valve's status. If necessary, the ramp function can be generated externally.
The pin of the valve core position detector is helpful for fault diagnosis.
Easy disassembly and replacement of valves during maintenance(Plug and play). After vibration and impact testing.
Assisted byDIN rail is used for installing electrical functional modules. Complete CE electromagnetic compatibility.
conform toIP67 rated valve environmental protection. There is an option to enhance valve functionality.
PC7-7-pin connector without plug and 7-pin connector with plug
andPE7 is the same except that pin 'C' is used to enable the signal, and PC7 is the same except that pin 'C' is used to enable the signal
Power supply DC24V (21V to 36V, including 10% peak * large fluctuation), * high current 3A command signal
direct current± 10 V, for the full stroke of the valve core, 10k Ω
Power level pulse modulation frequency10 kHz， nominal
Repeatability, between valves(When set):
Flow gain at 100% command signal ≤ 5%
Reverse polarity protectionIEC 144， IP67 rating
Relative humidity when85 to 95% at 20 to 70 C (68 to 158 F)
Oil temperature range at full performance0 C to 70 C (32 F to 158 F)
When the performance of the valve decreases*Low temperature -20 C (-4 F)
Temperature range during storage-25 C to+85 C (-13 F to+185 F)

VICKERS solenoid valve and safety valve are integrated to form a pilot operated pressure valve, which is both an unloading valve and a safety valve, sometimes also an overflow valve. During unloading, its control oil passage runs through each directional valve, similar to the unloading oil passage mentioned above. When each directional valve is in the neutral position, the control oil passage of the unloading valve (see Figure 1b) As shown in Figure 2, it runs through various directional valves and is connected to the oil tank. During unloading, most of the oil is unloaded with short channels and low pressure loss. When any directional valve works, the control oil channel is cut off, and the oil source enters the actuator from the directional valve. The working pressure is controlled by the pilot valve. At this time, the system pressure is adjusted by the pilot valve. This unloading method, even if the number of directional valve channels increases, only the control oil channel increases, and the unloading pressure does not increase significantly, always maintaining a low unloading pressure. This unloading method is mostly used for manual directional valves, and the unloading is reliable

The main valve of VICKERS solenoid valve (also known as safety valve) can be divided into three types according to the matching form: three-stage concentric, two-stage concentric, and slide valve. Among them, the slide valve structure has low working pressure and low control pressure accuracy; Although the three-level concentric structure is mature and widely used, compared with the two-level concentric structure, it is not as sensitive in action, has the same specifications, and has the same stroke. The oil flow capacity of the two-level concentric structure is much greater than that of the three-level concentric structure; The two-stage concentric control pressure is stable and has good processability. The application prospects of the two-stage concentric structure are broad. Here, we discuss its structural dimension design method based on the two-stage concentric structure

The pilot oil from the VICKERS solenoid valve controls the movement of the main reversing valve spool, allowing the incoming oil from the working pump to enter the boom cylinder and achieve boom lift. The higher the output pressure of the proportional pilot pressure reducing valve, the greater the displacement of the control main directional valve core, the greater the flow rate through the main directional valve, and the faster the boom rises. When the control handle is pulled to the limit position, the limit electromagnetic iron in the handle is energized, and the handle is attracted to the limit position. The boom rises at the maximum speed. When it reaches the position limited by the upper limit switch of the boom, the limit electromagnet of the operating handle is powered off, and the handle automatically returns to the middle position. The boom can then remain in the limited position. During the process of raising the boom, if the boom needs to stay in a certain position, the operating handle needs to be returned to the neutral position.

VICKERS solenoid valves are mainly used as actuating components in electro-hydraulic servo systems (see hydraulic servo systems). In servo systems, hydraulic actuators have the characteristics of good speed, high output power per unit weight, smooth transmission, and strong anti-interference ability compared to electrical and pneumatic actuators. On the other hand, electrical components are often used in servo systems to transmit signals and correct characteristics. Therefore, modern high-performance servo systems also use electro-hydraulic methods, and servo valves are essential components of such systems.

VickersVICKERSThe conventional models of proportional valves are as follows:

02-154581 KTG4V-3S-2B08N-M-U-H5-60-EN427

855AN00004A KBDG4V-3-33C20N-M2-PE7-H7-11

02-311229 KDG4V-3-33C30X-VM-U-H7-60

871918 KHDG5V-5-2C100N-X-VM-U1-H1-20

02-157450 KDG4V-3-33C30X-M-U-H7-60

857AN00009A KBDG5V-7-33C170N-M1-PE7-H1-11

02-323887 KDG4V-5-2C50N-Z-M1-U-H7-30

857AN00177A KBDG5V-5-2C90N-M1-PH7-H1-11

857AN00134A KBDG5V-8-33C330N-X-M2-PE7-H1-11

02-147675 KDG4V-3-2C20N-M-U-H7-60

02-145957 KCG-3-160D-Z-M-U-H1-10

857AN00260A KBDG5V-7-2C180N-X-H-M1-PE7-H1-10

857AN00246A KBDG5V-7-33C170N-X-H-M1-PE7-H1-20

857AN00256A KBDG5V-7-2C180N-T-M2-PE7-H1-20

855AN00075A KBDG4V-5-2C50N-Z-M2-PE7-H7-11

02-157008 KDG4V-5-33C50N-H-M-U-HA730

821AN00102A KDG5V-7-2C180N-T-M-U-H1-10

02-353771 KDG5V-8-2C330N-X-T-M-U-H1-20

857AN00002A KBDG5V-8-33C330N200-X-T-M2-PE7-H1-11

857AN00243A KBDG5V-7-33C170N-M1-PE7-H1-20

871918 KHDG5V-5-2C100N-X-VM-U1-H1-20

6041384-001 KHDG5V-8-33C375N-X-VM-U1-H1-30

KCG-3-250D-Z-M-U-H1-10

02-353252 KCG-3-350D-Z-M-U1-H1-10

02-156652 KCG-3-L250D-Z-M-U-H1-10P15-T10

02-145958 KCG-3-250D-Z-M-U-H1-10

858AN00040A KBFDG4V-5-33C50N25-Z-M2-PH7-H7-12

857AN00012A KBDG5V-7-33C85N-EX-M2-PE7-H1-11

565376 KFDG4V-3-2C20N-Z-M-U1-H7-20

Thermal power model:

6041384-001 KHDG5V-8-33C375N-X-VM-U1-H1-30

871920 KHDG5V-5-33C80N-X-VM-U1-H1-20

871918 KHDG5V-5-2C100N-X-VM-U1-H1-20

565320 KFDG4V-5-2C70N-Z-VM-U1-H7-20

VICKERS proportional directional valve565376 KFDG4V-3-2C20N-Z-M-U1-H7-20 in stock