Superimposed Relief Valve - Huade Hydraulic

Hydraulic relief valves are engineered to deliver unparalleled precision and reliability in hydraulic system pressure management. Designed to safeguard equipment from overpressure scenarios, our hydraulic pressure valves ensure system stability, operational safety, and energy efficiency across industries. With ISO-certified manufacturing and advanced technological integration, Huade hydraulic control valves are trusted globally for critical applications in mobile machinery, industrial automation, and process control.

Huade Hydraulic are exported all over the world and different industries with quality first. Our belief is to provide our customers with more and better high value-added products. Let's create a better future together.

​​How It Works​​

Hydraulic Relief Valves operate on a ​​spring-loaded or pilot-controlled mechanism​​ to regulate system pressure:

​​Pressure Sensing​​: The hydro relief valve detects system pressure via a piston or diaphragm.

​​Pressure Relief​​: When pressure exceeds the preset limit, the electric hydraulic relief valve opens, diverting excess hydraulic fluid to the reservoir.

​​System Stabilization​​: Once pressure normalizes, the adjustable hydraulic relief valve resets, maintaining optimal operating conditions.

Advanced models (ZDB6/ZDB10 series) feature superimposed pilot control for multi-stage pressure adjustment, enabling precise flow regulation and overload protection.

​​Series​​ ​​Key Features​​ ​​Applications​​ ​​ZDB6 Series​​ Superimposed pilot control, 315Bar max pressure, 5 control styles Mobile machinery, industrial presses ​​ZDB10 Series​​ High-flow capacity, pressure compensation, 4 pressure adjustment levels Heavy-duty hydraulic systems, cranes

Hydraulic relief valves advantages​​

​​•​​ ​​​​ISO-Certified Quality​​: Rigorous testing ensures durability under extreme temperatures (-20°C to +80°C) and pressures up to 315Bar.

​​•​​ ​​Advanced Pressure Control​​: Patented superimposed pilot technology enables multi-stage pressure regulation for complex systems.

​​•​​ ​​Global Compliance​​: Meets CE, RoHS, and ANSI standards for worldwide deployment (India, Europe, Russia, Vietnam).

​​•​​ ​​​​Energy Efficiency​​: Minimizes heat generation and energy loss through optimized flow paths.

​​•​​ ​​​​Customization​​: Tailored port threads (e.g., BSPP, NPT), materials (carbon steel, stainless steel), and control styles.

Hydraulic relief valves applications​​

​​•​​ ​​Mobile Machinery​​: Excavators, forklifts, and agricultural equipment.
​​Industrial Automation​​: Presses, injection molding machines, steel mills.

​​•​​ ​​Safety-Critical Systems​​: Pressure relief for hydraulic cylinders, emergency shutdown systems.

​​•​​ Process Industries​​: Food processing, pharmaceuticals, and chemical plants (corrosion-resistant models available).

​​Company Services​​

As a professional hydraulic relief valve supplier, Huade Hydraulic combines engineering expertise with customer-centric support:

​​• ​​Custom Solutions​​: Collaborate with our technical team to design valves for unique pressure, flow, and environmental requirements.

​​• ​​24/7 Technical Support​​: On-site installation guidance and troubleshooting via WeChat, , or .

​​• Global Logistics​​: Fast shipping from Hebei, China, with DDP/DAP incoterms and OEM packaging.

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Characteristic Features

POOCCA Rexroth pressure relief valves are designed to protect hydraulic systems from overpressure. Here are some advantages and characteristics of Rexroth pressure relief valves:

Advantages:

For more information, please visit Superimposed Relief Valve ZDB10​​.

1. Accurate pressure control: Rexroth pressure relief valves provide accurate pressure control, ensuring that the pressure within the hydraulic system remains within safe limits.

2. High flow capacity: These valves have a high flow capacity, which allows for the efficient and effective flow of hydraulic fluid through the system.

3. Durable design: Rexroth pressure relief valves are built to last, with a durable design that can withstand even the harshest operating conditions.

4. Easy installation: These valves are designed for easy installation, with simple connections and mounting options that make them easy to integrate into existing hydraulic systems.

Characteristics:

1. Adjustable pressure settings: Rexroth pressure relief valves can be adjusted to suit specific pressure requirements, making them customizable to the needs of the application.

2. Direct-acting or pilot-operated design: These valves can be either direct-acting or pilot-operated, depending on the application and specific requirements.

3. High-pressure ratings: Rexroth pressure relief valves are designed to handle high pressure ratings, making them suitable for use in heavy-duty applications.

4. Various port sizes: These valves come in a range of port sizes to suit different hydraulic systems and flow requirements.

5. Different mounting options: Rexroth pressure relief valves can be mounted in different orientations and configurations, providing flexibility in installation and use.

FAQ     

1. What is a pressure relief ZDB valve?

The pressure relief ZDB valve is a type of control valve used in hydraulic systems to regulate the pressure of fluids. It is designed to prevent pressure build-up in the system by diverting excess fluid flow back to the reservoir.

2. What are the benefits of using a pressure relief ZDB valve?

The use of a pressure relief ZDB valve can help to protect hydraulic components from damage caused by excess pressure. It can also improve the efficiency and performance of hydraulic systems by maintaining a consistent pressure level.

3. How does the pressure relief ZDB valve work?

The pressure relief ZDB valve works by sensing changes in pressure within the hydraulic system. When the pressure exceeds the set limit, the valve opens, allowing excess fluid to flow back to the reservoir, relieving the pressure.

4. What are the key features of the pressure relief ZDB valve?

The key features of the pressure relief ZDB valve include a compact design, low pressure drop, precise pressure control, and low hysteresis.

5. How do I choose the right pressure relief ZDB valve for my application?

When choosing a pressure relief ZDB valve, consider the maximum pressure and flow rate of your hydraulic system, as well as the required pressure set point and accuracy. Different valve sizes and pressure ranges are available to suit different applications.