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PT-1220-250
cissoko
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The PC-1220-250 (usually the full model number is PC-1220-250-1 ) is a high-performance pneumatic 1-spool tipping valve/directional control valve , primarily used in the hydraulic systems of dump trucks, garbage compactors, loaders, and construction and agricultural machinery.
Flexible pressure adjustment (key feature) : The suffix "-250" indicates a rated working pressure of 250 bar . This valve features a built-in high-sensitivity safety relief valve, supporting pressure adjustment (either by replacing the entire fixed pressure-limiting valve core or by directly adjusting the pressure on-site using the included pressure-adjusting screw ), effectively preventing system overpressure and pipe bursts, protecting the cylinder and pump.
Superior operational performance : With an industrial-grade high flow rate of 220 L/min , it can be matched with a high-displacement gear pump to ensure that large-tonnage front-mounted multi-stage hydraulic cylinders can quickly and efficiently complete lifting operations.
Safe, precise, and slow descent : Integrates a proportionally adjustable slow drop function. The driver can use a pneumatic control handle inside the cabin to smoothly control the tens of tons of cargo box to return to its original position at a uniform speed, eliminating hydraulic shock (water hammer effect) and preventing violent damage to the chassis frame or causing uneven load rollover .
Main application scenarios : As a 100% interchangeable upgrade of standard Hyva valves, it is widely used in the hydraulic control systems of heavy-duty special vehicles such as mining dump trucks, large semi-trailer dump trucks, and asphalt/gravel paving trucks that unload while moving
| Parameter Item | Specification Data | Notes/Explanations |
|---|---|---|
| Standard Model | PT-1220-250 (Adjustable Voltage Version) | 100% compatible with Hyva PT-1220 series |
| Valve Body Structure | 1-Spool Monoblock | Reduces the risk of oil leaks; robust and durable |
| Rated Flow Rate (Max Flow) | 220 L/min (approximately 58 US gpm) | Meets the high-speed lifting requirements of large-displacement hydraulic pumps and large-tonnage hydraulic cylinders |
| Maximum Pressure (Calibrated) | 250 bar (25 MPa) | Capable of withstanding heavy loads and lifting loads of mining dump trucks |
| Pressure Range | 150 bar - 250 bar (adjustable) | The pressure can be adjusted by adjusting the pressure screw or replacing the pressure relief valve core |
| Control Type | Pneumatic Pilot | No high-pressure oil pipes in the cab, making it safe and easy to operate |
| Control Functions | Lift / Stop / Rapid Descent / Fine-tuned Descent | Includes 4-in-1 control with Slow Drop function |
Applications
Commercial transport vehicles (core scenarios): widely used in heavy-duty dump trucks, semi-trailer tipper trucks, hook-lift garbage trucks , etc., to precisely control the safe lifting and smooth lowering of large-tonnage cargo boxes.
Construction and engineering machinery: Used in loaders, excavators, skid steer loaders , etc., to control bucket tilting, material lifting and other heavy-duty operations.
Sanitation and municipal vehicles: Suitable for compressed garbage trucks, road sweepers, and sewage suction trucks , driving the hydraulic lifting of garbage containers or garbage unloading plates.
Agricultural and industrial loading and unloading: Used for high-horsepower agricultural trailers, industrial forklifts and front-end loading attachments, working stably in highly polluted and harsh environments.
Valve 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.
Screw Adjustment Version: The improved valve body surface features a pressure adjusting screw protected by a lock nut [made-in-china.com]. After loosening the nut, turning the screw clockwise with a tool increases the pressure , while turning it counterclockwise decreases the pressure.
Replacement cartridge version: The standard Hyva original structure uses a fixed pressure valve cartridge to prevent drivers from blindly increasing the pressure . To adjust the pressure, the entire valve cartridge must be unscrewed and replaced with a dedicated original valve cartridge with the corresponding pressure rating (such as 190 bar or 220 bar).
Installation interface: Check that the main oil inlet (P port) and oil return port (T port) are standard G 1" (1 inch) large pipe threads.
Installation location: This valve is mostly mounted on the side flange of the oil tank. Check whether the bolt hole spacing of the flange is consistent.
Pump and cylinder parameters: As long as the flow rate of the existing hydraulic pump does not exceed 220 L/min and the maximum pressure requirement of the system is within 250 bar , 100% interchangeability and upgrade can be achieved
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.
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 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.
