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GL-E20L-02
Cissoko
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The GL-E20L-02 Dump Truck Level Limit Valve is a crucial safety component specifically engineered for dump truck hydraulic systems. This valve acts as an automatic safety cut-off. When the hydraulic cylinder reaches its maximum lift height during tipping operations, the valve instantly cuts off the air supply to the directional valve's air cylinder. This action prevents the oil cylinder from over-extending, effectively preventing cylinder detachment accidents and protecting the entire hydraulic system. With a rated pressure of 190bar and a flow rate of 80L/min, it ensures reliable performance under heavy loads. Its compact design allows for easy installation, making it an indispensable safety device for enhancing operational safety and protecting valuable equipment in various demanding applications, from construction sites to mining operations.
Core Functions: It boasts a high flow rate tolerance of 80 L/min and features a high-strength mechanical impact contact rod . When the dump truck bed is raised to its highest safe angle, the bed physically impacts the valve's contact rod, automatically cutting off or switching the pneumatic control signal within milliseconds
Benefits: 100% prevention of vehicle rollover accidents caused by over-lifting. Simultaneously, it can forcibly stop lifting before the hydraulic cylinder reaches its physical limit, effectively preventing the hydraulic cylinder from expanding or bursting due to over-lifting, or causing damage to the hydraulic pump due to overload, significantly extending the service life of the lifting system.
Market Positioning and Supporting Parts: This valve typically uses sizes and threaded interfaces fully compatible with international mainstream systems (such as the HYVA system) . As a mature standard part in the heavy-duty truck parts supply chain, it is widely used in the original manufacturing and aftermarket modification of various medium and heavy-duty dump trucks and special tipper engineering vehicles
| Parameter | Specification |
|---|---|
| Product Type | Knock-off valve |
| Model Number | GL-E20L-02 |
| Total Range | 24mm |
| Adjustable Range | 15mm |
| Pneumatic Control Range | 0.6~1.2MPa |
Applications
Core Scenario:
Widely used as a standard travel control component for heavy-duty dump trucks and extra-long semi-trailer dump trucks (such as 6x4 and 8x4 models) and high-capacity semi-trailer dump trucks. Because long cargo boxes are highly susceptible to crosswinds and terrain during lifting, this valve, by limiting a precise tipping angle, forcibly lowers the vehicle's center of gravity, preventing rollover accidents .
High-intensity operating conditions: Specialized vehicles for mining and urban sanitation
are used in off-highway mining trucks, heavy-duty hooklift trucks, and large garbage compactors . Its high-flow-rate design of 80 L/min perfectly matches the rapid, high-frequency unloading hydraulic circulation of these vehicles , and it is vibration-resistant, impact-resistant, and maintains precise operation even in harsh environments .
Aftermarket modification: Seamless interchangeability with mainstream pneumatic control systems such as Hyva
is a popular standard component and aftermarket modification part. It is often directly installed at the limit stroke contact position of the multi-section hydraulic cylinder and connected to the standard cab pneumatic lifting switch for safety upgrades or in-situ replacement of faults in old vehicle systems.
Dump Truck Limit Valve GL-E20L-02 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.
A: It's equivalent to the "air brake switch" for lifting the truck bed . When the dump truck bed is raised to the maximum safe angle, the bed will physically impact the valve's contact rod. This will instantly cut off or switch the air control signal from the cab, forcing the hydraulic cylinder to stop extending further, thus 100% preventing rollover or cylinder overshoot damage caused by over-lifting.
A: This means that the valve has a high flow rate , easily handling hydraulic oil or pilot medium flow rates of 80 liters per minute. This makes it ideal for use in the high-efficiency hydraulic systems of medium and heavy-duty dump trucks, large semi-trailer dump trucks, or mining trucks , ensuring that the air/oil circuits do not experience severe pressure buildup during rapid oil return or switching of the large cylinders.
A: Possibly. There are two common reasons: First, the installation position is off, causing the carriage to impact and trigger the limit valve rod before it reaches the top; second, the return spring inside the valve is fatigued and stuck, or the mechanical rod is deformed and stuck, causing the valve to remain in the "cut-off/limit" state, preventing the pneumatic control signal from passing through, and the hydraulic system mistakenly believing that it has reached the top.
A: Yes, it is fully compatible. The GL-E20L-02 conforms to the internationally recognized standards of mainstream pneumatic dump trucks such as HYVA in terms of its external structure (approximately 18.9 × 10 × 2.7 cm) and air/oil port threaded interfaces. During after-sales maintenance or fleet modifications, there is no need to modify the original air lines or brackets; it can be seamlessly replaced in situ.
A: The key is to maintain the cleanliness of the mechanical contact rod and the air circuit. First, regularly clean the mud, sand, and oil stains on the valve body and impact contact rod to prevent the contact rod from getting stuck and not returning to its original position; second, ensure that the vehicle's air circuit system is dry (regularly drain water from the air tank) to prevent moisture and impurities from entering the limit valve and damaging the pneumatic seals, which could lead to air leakage or failure.
Yes, we support OEM and customization, including nameplate, packaging, and specific performance requirements. Send us your drawings or specifications for evaluation.
GL-H1220-AO-Integral Shunt Combination 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.
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.
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.
Of course we can. Just send me your logo we can make it for you.
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%).
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.
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.
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.
All hydraulic pumps produced by Cissoko Hydraulic have undergone compliance testing, ensuring their quality and reliability.
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.
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.
