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HAWE LHK33G-21-320/320 balance valve, original from Germany
NegotiableUpdate on 05/16
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Overview
HAWE LHK33G-21-320/320 balance valve is a German original $r $nHAWE LHK33G-21-320/320 double acting balance valve produced by HAWE, mainly used to prevent hydraulic actuators (such as cylinders or motors) from losing control and descending under load.
Product Details
HAWE LHK33G-21-320/320 balance valve, original from Germany
HAWE LHK33G-21-320/320 is a double acting balancing valve produced by HAWE in Germany, mainly used to prevent hydraulic actuators (such as cylinders or motors) from losing control and descending under load.
The following is a summary of key parameters and selection information for this model:
| parameter item | value | explanation |
|---|---|---|
| Product Model | LHK 33 g- 21 - 320 / 320 | complete model number |
| Maximum work pressure | 360 - 420 bar | There are slight differences among different sources, all of which are much higher than the set pressure |
| set pressure | 320 bar | The "320/320" at the end of the model indicates that the set pressure on both sides is 320 bar |
| maximum flow | About 60 L/min | |
| connection method | Pipe connection (G-thread) | The "G" in the model indicates a tubular threaded connection |
| Open ratio | About 1:4.6 | Pilot control ratio affects control pressure |
| Main applications | Cranes, construction machinery, lifting equipment | Especially suitable for applications without significant oscillation tendency |
Interpretation of Model Code
The meanings of each part of model LHK 33 G-21-320/320 are usually as follows:
LHK: Product series code, indicating this series of balance valves.
33: Specification code, indicating the diameter of the valve, corresponding to a specific flow capacity.
G: Connection method, representing threaded connection (tubular).
21: Design or damping form code, which may indicate the presence of specific damping holes or throttling characteristics inside.
320/320: Set pressure in bar. The set pressure of the balance valve in both directions of port A and port B is 320 bar.
Working principle and function
A balance valve is essentially a pressure control valve. In your device, it mainly serves the following functions:
Load holding: When the reversing valve is in the neutral position, the balance valve will close and lock the circuit with its set pressure (320 bar) to prevent accidental weight sliding due to pipeline leakage or valve leakage.
Steady descent (back pressure of return oil): When heavy objects need to be lowered, hydraulic oil needs to enter the rod chamber of the cylinder through a directional valve. At this time, a back pressure will be generated on the return oil circuit of the rodless chamber, and the magnitude of this back pressure is determined by the set pressure of the balance valve. Only when the pressure in the oil inlet reaches a certain value (acting on the balance valve through the pilot port), will the balance valve open, allowing for oil return and achieving smooth descent to avoid stalling.
Precautions
Selection confirmation: The set pressure for this model is 320 bar. Please confirm that the working pressure of your hydraulic system matches this.
Installation: The valve is a tube type connection, which is relatively simple to install, but attention should be paid to the directional markings on the valve body to ensure consistency with the direction of the oil circuit.
Source of goods: This model is an imported product, and the regular delivery time may be longer (such as 6-8 weeks). Please reserve time when purchasing.
HAWE LHK33G-21-320/320 balance valve, original from Germany
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