HAWE RH3V high-pressure hydraulic control check valve proportional valve, original from Germany

HAWE RH3V high-pressure hydraulic control check valve proportional valve, original from Germany

It is mainly used to achieve leak free oil circuit locking in hydraulic systems or as an unloading valve for hydraulic control release. Here is a summary of its core information:

1. Core parameters

• Work pressure: 500 bar (some sources claim it can reach up to 700 bar)

• Flow rate: approximately 55 L/min

• Connection method: Inline thread connection

• Oil port size:

• A. B port: G 1/2 '

• Oil port Z: G 1/4 '

  
  

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2. Product features

• Leak free sealing: In the closed state, this valve can achieve leak free oil circuit locking, which is its advantage over ordinary slide valve directional valves.

• With pre pressure relief function: The 'V' in the model represents that the valve is equipped with a pre pressure relief mechanism. This design can effectively mitigate the hydraulic shock during reverse opening under high pressure and high flow conditions, making valve switching smoother.

• Working principle: When the oil flows from port B to port A, the valve core opens freely under pressure; When reversing from A to B, the valve core closes under the action of spring force and hydraulic pressure. When reverse flow is required, control oil can be introduced from port Z to forcibly push open the valve core.

3. Comparison of Series Models

The RH series has multiple specifications, and RH3V is one of the key models. You can quickly understand its positioning throughout the entire series through the following table:

4. Typical applications

• Hydraulic cylinder leak free locking: For example, in lifting and hoisting equipment, it prevents heavy objects from sliding down due to leakage inside the reversing valve.

• Hydraulic controlled release unloading: Used as an unloading valve on the return oil path of a double acting hydraulic cylinder to handle high flow return oil.

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5. Selection and procurement suggestions

• Confirm model: Confirm whether you need RH3 (without pre release pressure) or RH3V (with pre release pressure). In high-pressure or high flow situations, it is recommended to prioritize models with 'V' to avoid impact.

• Legitimate channel: Hawei is a German brand with numerous agents in China. It is recommended to conduct selection consultation and procurement through Hawei or authorized first level agents to ensure product quality and technical support.

HAWE RH3V high-pressure hydraulic control check valve proportional valve, original from Germany