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DBD Series Direct Acting Relief Valve

Feature specification
Working medium: 1. Mineral oil -suitable for nitrile rubber or fluoro rubber seals
2. Phosphate esters-suitable for fluororubber seals
Working medium temperature range: 
1. 30 to +80℃ (nitrile rubber seal)
2. -20 to +80℃ (fluoro rubber seal)
Viscosity Range: 0 to 800
Oil Cleanliness: The maximum oil contamination level is NAS1638 level 9 and IS04406 level 20/18/15
Diameter: 6 and 8, 10, 16 and 30, 25 and 30 
Working pressure range of import: to 40,63,31.5
Working pressure range of export: 31.5
  • DBD

  • Green Hydraulic

  • Yes

  • ISO9001,CE

  • Standard

  • 1 set

  • Industry

Availability:
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Product Description

DBD Series Direct Acting Relief Valve


DBD direct acting relief valves (like Bosch Rexroth DBD types) are used to limit maximum system pressure in hydraulic circuits, protecting components, ensuring stable operation, and extending equipment life, commonly found in mobile hydraulics, industrial presses, elevators, and machine tools for pressure regulation and safety. They work by opening a path to tank (T) when pressure exceeds a spring-set limit, diverting flow, and are available for threaded, subplate, or cartridge mounting in various sizes and pressure ranges

Key Characteristics of DBD Series Direct Acting Relief Valve: 

  • Direct Operation: System pressure directly acts on a poppet or ball against an adjustable spring, offering quick response.

  • Pressure Limiting: Reliably limits maximum system pressure to protect components from damage.

  • Compact & Versatile: Cartridge design allows for easy installation as an insert or with threaded/subplate connections.

  • Low Leakage: Features line contact sealing for minimal leakage when closed.

  • Adjustable Settings: Pressure setting is changed by adjusting the spring tension via knobs, handles, or protective caps.

  • Robust Construction: Built with high-strength, hardened steel for durability in demanding applications.

  • Multiple Options: Available in various sizes (e.g., 6, 10, 20) and pressure ratings (e.g., 25-400 bar, up to 630 bar) with different seal materials (NBR, FKM).


Application: 

  • Pressure Limiting: The primary role is to cap the highest pressure in the entire system or a specific part, preventing damage from over-pressurization.

  • Safety Devices: Used as safety valves, especially in systems like elevators, to protect against catastrophic pressure failures.

  • System Stabilization: Help maintain consistent system pressure, ensuring components operate within their designed parameters.

  • Pilot Valves: Can serve as pilot valves for more complex, pilot-operated relief valves.

  • Counter Pressure Control: Manage pressure in discharge lines, impacting flow capacity in certain setups.


    • Vane Pump Application

Packaging & Delivery

Hydraulic valves are typically packaged securely to prevent damage during transit. The packaging includes:

Protective Wrapping: To safeguard the pump from environmental damage.

Custom Crates: For larger, heavier pumps, ensuring safe handling.

Documentation: Includes installation, maintenance instructions, and warranty details.

Delivery time depends on the model, customizations, and location but typically ranges from 2 to 6 weeks from the order date.

Certifications & Quality Assurance

All hydraulic valves are manufactured in compliance with international standards, ensuring high performance and reliability:

ISO 9001: Certified for quality management systems.

CE Certification: Ensures compliance with European safety, health, and environmental protection standards.

RoHS Compliance: Ensures the pump does not contain hazardous materials.

Factory Testing: Every pump is rigorously tested for performance, pressure, and leak integrity before shipping.

Green Hydraulic Patent Certificate

FAQ

Are you a manufacture for the vane pump or a wholesale ?

We are a manufacture for vane pumps。.We are located in Changzhou City, Jiangsu Province, China.Welcome to visit us.


What's our advantages?

Factory established in 2005;

With a great deal of production experience;

80+ employees become the professional team;

Constant updated ERP system ensure efficiency of work;

Sophisticated equipment ehanced the accuracy of products;

Professional salesmen provide the greast service;

With a large number of famous customers all over the world;

Great after-sales service;

With the long term cooperation with famous logistics and express company in China,provide the better goods service.


What is your payment terms?

Small order/sample order,full payment in advance; Big orders send the first payment 30% before the production,and the balance before shippment.We'll show the photos of the products and packages before delivery.


Can you make my own brand on the products?

Of course we can. Just send me your logo  we can make it for you.


What is our main export market?

America(40.5%):USA, Canada, Argentina, Brazil

Europe(30.8%):Italy,Germany,England,Holland,Spain,Swiss,Finland,Russia,Poland.

Asia(23.5%):Korea,singapore,India,Turkey,Vietnam,Saudi Arabia,Syria, Israel,Lebanon.

Others(5.8%).

Unedited footage of the Green Hydraulic Factory

The Green hydraulic pump manufacturing facility is a specialized industrial plant that focuses on producing hydraulic pumps and related components. These factories are equipped with advanced machinery and technology to fabricate high-quality pumps designed for a wide range of applications, from heavy equipment and machinery to automotive and industrial systems.

Unedited footage of the Green Hydraulic Factory1

The production process typically involves precision engineering, where raw materials like metals and alloys are processed into pump components such as gears, pistons, cylinders, and seals. These parts are then assembled into fully functional hydraulic pumps, which are tested for performance and quality control to ensure reliability, efficiency, and durability under various working conditions.

Unedited footage of the Green Hydraulic Factory2

Green Hydraulic's manufacturing facilities for hydraulic pumps maintain stringent quality standards, often adhering to international certifications, to meet the expectations of customers in industries such as construction, agriculture, automotive, and manufacturing.

Unedited footage of the Green Hydraulic Factory3

All hydraulic pumps produced by Green Hydraulic have undergone compliance testing, ensuring their quality and reliability.

Unedited footage of the Green Hydraulic Factory4

To meet the diverse needs of different industries, the green hydraulic offer customization options, such as specialized seals, materials, and pump configurations. These facilities often work closely with engineering teams to develop tailored solutions for specific applications, from high-pressure systems to low-flow, high-efficiency pumps.

Unedited footage of the Green Hydraulic Factory5

Each pump undergoes a rigorous quality control process, where pressure tests and performance assessments are conducted to ensure that the pumps meet the required standards for flow rate, pressure capacity, and durability.


Green Hydraulic Advantages


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