3 Series Electro Actuation Proportional Multi-Way Hydraulic Valve
China 3 Series Electro Actuation Proportional Multi-Way Hydraulic Valve, Find details about China Hydraulic Valve, Control Valve from 3 Series Electro Actuation Proportional Multi-Way Hydraulic Valve
flow: Qmax=100L/min(32g/min) Qmin=3L/min
Voltage: 12V DC ;24V DC
Intended applications: construction machinery, lifting machinery, municipal vehicles, special vehicles, mining machinery, coal mining machinery, petroleum machinery, drilling equipment and so on.
Oil-taking way of multi-way valve is equipped with pressure oil inlet P and oil return tank port R, as well as control port LS and measurement ports Z & M.
- In compliance with the variety of oil source, constant displacement pump and variable displacement pump
- In compliance with the specifications of connecting threads of port P and port R, G1/2, G3/4 & G1
- With or without pilot controlled oil supply
- With or without pressure limitation
- With or without electromagnetic unloading of the pump
Directional spool valve
Proportional directional valve shall be fixed between connection block and end plate by three screw stems (pull rods) and 12 directional spool valves can be mounted for a valve bank at most. Generally, the number of ways of the directional spool valve doesn't exceed 8. In case the number is equal to or larger than 9, it's suggested to divide the valves into two valve banks of multi-way valve. As to the directional spool valve with 9 or more ways, in case the system can't be divided into two valve banks of multi-way valve, it's required to order corresponding enhanced-type pull rod accessory.
- In accordance with the size of working port of directional spool valve AB, G1/2 & G3/4
- In accordance with the neutral-position function and flow of directional spool valve
- With or without secondary pressure limitation, N no pressure limitation, C-type pressure limitation and AB-type pressure limitation
- In accordance with the operation manner, pure manual control, electronic control, hydraulic control & friction positioning
- With or without any auxiliary function
End plate
As the terminal of combined-type multi-way valve, the end plate shall be selected according to the characteristics as follows: with oil return port T controlling the internal discharge or external discharge of oil, with or without additional LS, oil inlet P, oil return port R, etc.
l With port T for pilot control of internal discharge or external discharge of return oil
With or without additional LS inlet or cut-off of pump's circulation loop
1st directional spool valve control action: turn around
2nd directional spool valve control action: big arm
3rd directional spool valve control action: middle arm 1
4th directional spool valve control action: middle arm 2
5th directional spool valve control action: little arm
For 3 series constant displacement pump system, the safety pressure is set as 350 bar, each directional spool valve has the differential reducing valve. While L valve Core is on Neutral position, P,A,B,R port is closed ; While H valve Core is on Neutral position, P port is closed and A,B port is open with R port. A,B port of 1st directional spool valve flow is 40L/min, and A,B port press is not more than 300 bar, for the 2nd directional spool valve A port flow is 40L/min, B port flow is 25L/min, for the 3rd&4th directional spool valve, A&B port flow is 16L/min, for the 4th directional spool valve pressure should not more than 250bar. The end plate is Standard, and the T port is connected externally to oil tank.
1st directional spool valve control action: turn around
2nd directional spool valve control action: big arm
3rd directional spool valve control action: middle arm
4th directional spool valve control action: little arm
Features of the technical performance below :
Application:
The valve is available with manual, hydraulic remote,pneumatic,electrohydraulic and electropneumatic controls. Numerous configurations and solutions are possible. Working sections have auxiliary valves and a broad range of interchangeable spools. Special versions for LS variable pumps can be realised on request.Suitable for applications including Backhoe loaders, Wheel loaders, Backhoes, Compactor, Hook and Skip loaders,Dilling machines.
D6 has available:Special inlet section for parallel valves connection (Suitable for forest applications).
Combined Type Size 5
Proportional multi-way directional spool valve type HLPSL and HLPSV according to
load-sensitive principle are mainly applied to engineering machinery electric hydraulic control
field to control the movement direction & speed of hydraulic oil cylinder or hydraulic motor. With
various functions such as electric proportional control, electric switching value control, hydraulic
control, pneumatic control, manual control, etc., such valves can realize stepless speed regulation
and will not be influenced by load change. The characteristic of load sensing enables the
multi-way actuators to run simultaneously and independently from each other at different speed
and pressure ratings until the maximum flow of bumping source is reached.
Load-sensitive principle, applied in hydraulic system, can realize flow control of actuators
without any influence of the load. Load-sensitive mechanism (fixed differential reducing valve)
enables the outlet pressure to match with the changing load continuously during the working
period. One side is with the function of load signal & spring force, while the other side is imposed
on outlet pressure of fixed differential reducing valve which is equal to the sum of load pressure
and the pressure generated by spring, namely, the differential pressure beside the throttle of
proportional valve is a constant value and therefore the flow of proportional valve is only in
proportional to control signal. As to the valve type HLPSL, the load pressure signal passes shuttle
valve, and the damper exerts a function on the spring cavity of fixed differential overflow valve
which will regulate the system pressure to the value of the sum of load pressure and spring force,
so that the outlet pressure of pump can match with the load pressure. In case the load pressure is
low, the outlet pressure of pump will be low and vice verse, so as to realize the energy
conservation of the system.
As to multi-way directional spool valve type HLPSV, the directional spool valve of each way,
after selection of load pressure by shuttle valve, will deliver the maximum load pressure signal to
load-sensitive port X of the variable displacement pump, and make the output pressure & flow of
variable displacement pump match with the system through the control of pump's variable
displacement mechanism, so as to realize the energy conservation of the system.
Perfect replace
Danfose;
and other brand...
Advantages:
1. Low speed, high torque
2. Perfect reliability,high efficiency and long life
3. Low noise and wide range of speed
4. Widely applicable for agriculture machinery, fishing machinery, plastic industry, mining, and construction machinery, especially fitted to lower load applications, such as plastic injection mold machine, cleaner, grass cutter, etc.
5. Very competitive price
6. 1 year of warranty
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