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DK34-B-Dump-Truck-Valve-Control-Valve

The DK34-B (often cataloged alongside the DK34-A or as part of the BKQF34-B / JYQF34-B standard series) is a cabin-mounted, pneumatic proportional control valve with a built-in PTO (Power Take-Off) switch. It is engineered specifically for dump trucks, tipper trailers, and heavy-duty mining haulers to control the hydraulic lifting and lowering cycles.
  • DK34-B-Dump-Truck-Valve-Control-Valve

  • cissoko

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DK34-B-Dump-Truck-Valve-Control-Valve 

Overview

The GLXK-2 is a dual-section manual hydraulic directional control valve widely used in the hydraulic systems of small-to-medium-sized construction machinery, agricultural equipment, and truck-mounted cranes. Featuring a high-strength cast iron body—available in either monoblock or sectional configurations—it utilizes two independent manual control levers to separately control the extension, retraction, and stopping of two double-acting or single-acting hydraulic cylinders (or hydraulic motors).

Features and Benefits

  • Integrated PTO Kickout: Includes an automatic disengagement feature. When the operator lowers the truck bed, the valve mechanically or pneumatically flips the PTO switch off, preventing catastrophic transmission and hydraulic pump wear. 

  • 4-Position Proportional Control: The control lever features four distinct gear positions: Raise (Lifting), Intermediate Stop (Hold), Descent (Fast Drop), and Slow Descent (Feathered Drop). 

  • Self-Locking Safety Gate: The center/neutral position is equipped with a mechanical self-locking detent. This stops the lever from shifting accidentally if bumped while driving, locking the dump bed firmly in position. 

  • Electrical Integration: Many standard DK34-B variants come pre-wired with an indicator warning light terminal to give the driver a clear visual alert on the dashboard when the PTO is engaged

DK34-B-Dump-Truck-Valve-Control-Valve  Installation Dimensions


DK34-B-Valve

Applications

  • Agricultural Machinery & Utility Tractors

    • Role: Installed on compact and mid-sized farm tractors to manage the independent movements of a front-end loader attachment (one lever controls boom lifting, the other controls bucket tilting) or rear 3-point hitches. [1]

  • Light Construction & Earthmoving Equipment

    • Role: Drives auxiliary hydraulic mechanisms on mini-excavators, skid steers, and site dumpers, such as controlling the extension of left/right stabilizer outrigger legs or leveling blades.

  • Material Handling & Forklifts

    • Role: Operates the primary fluid lines for small electric/diesel forklifts and stackers, separating the mast lifting circuit from the mast tilting network via the two manual handles.

  • Light Wreckers & Flatbed Tow Trucks

    • Role: Perfectly handles dual hydraulic functions on recovery vehicles—where Section 1 operates the hydraulic winch motor and Section 2 controls the tilting flatbed tilt cylinders.

Vane Pump Application


Packaging & Delivery

Shipping Methods

DK34-B-Dump-Truck-Valve-Control-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.


DK34-B-Dump-Truck-Valve-Control-Valve  FAQ:

1: What is the difference between the DK34-A and the DK34-B?
The difference lies in the lever return mechanism. The DK34-B typically utilizes a fixed detent layout where the lever locks into place at the tipping or lowering limits until manually moved back. Alternative versions use a spring-return mechanism that automatically snaps the lever back to the neutral "Hold" position as soon as the driver lets go. 
2: Why is the PTO automatic disengage feature on this valve so important?
If a driver forgets to disengage the PTO after dumping a load and drives away, the hydraulic pump will keep spinning at high highway RPMs. This can overheat the hydraulic oil, blow out cylinder seals, or shred the transmission gears. The DK34-B eliminates human error by automatically turning off the PTO the moment the bed begins lowering. 
3: Air is venting from the bottom of the DK34-B inside my cabin. Is this normal?
No, it means the internal O-rings or seals are worn, or the exhaust line was routed incorrectly. The air exhaust port (typically marked as Port 3 or R) should always have an air line routed completely outside the truck cabin. Venting inside the cab creates excessive noise, blows dust around, and can release toxic anti-freeze/alcohol vapor if your air system uses cold-weather additives. 
4: How does the "Slow Descent" position work?
The DK34-B is a proportional valve, meaning it controls how much air pressure is sent to the main hydraulic distribution valve under the chassis. By pushing the lever only slightly into the descent gate, the valve restricts the air signal, forcing the hydraulic fluid back into the reservoir slowly. Pushing it completely opens the flow for a fast dump.
5: What should I check if the valve fails to lift the dump truck bed?
Check the system components in this order:
  1. Air Pressure: Ensure the vehicle's auxiliary air tank is reading at least 6 Bar (90 PSI); anything lower will fail to actuate the spool. 

  2. PTO Engagement Light: Check if the indicator light on the switch turns on. If it doesn't, air isn't reaching the PTO cylinder. 

  3. Line Blockage: Inspect the pneumatic lines for moisture freeze-ups or kinks between the cabin valve and the main hydraulic valve under the chassis.

6. Do you provide OEM or customized services

Yes, we support OEM and customization, including nameplate, packaging, and specific performance requirements. Send us your drawings or specifications for evaluation.

Certifications & Quality Assurance

DK34-B-Dump-Truck-Valve-Control-Valve  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 Valve does not contain hazardous materials.

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



Green Hydraulic Patent Certificate

FAQ

1.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.


2.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.


3.Can you make my own brand on the products?

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


4.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 Cissoko 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 Factory

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 Factory

Cissoko 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 Cissoko Hydraulic have undergone compliance testing, ensuring their quality and reliability.

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To meet the diverse needs of different industries, the Cissoko 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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