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Ptm 1220 250
cissoko
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This specialized pneumatically controlled hydraulic tipping valve is engineered specifically for heavy-duty dump trucks and commercial tipping trailers. It integrates the main system relief, directional reversing, and lowering speed management into a single housing. The hallmark feature is its proportional slow-reduction lowering mechanism, which gives the operator precise air-cabin control to decelerate the massive tipping bucket smoothly before it contacts the truck chassis, eliminating structural impact shocks and protecting hydraulic cylinders.
Proportional Slow-Reduction Lowering: Connects directly to an air-cabin joystick, utilizing fine pneumatic pilot shifts to proportionally restrict return oil flow. This allows the operator to feather the bed down slowly or dump quickly.
Direct Tank Mounting Option: Built with a compact, flanged structural configuration that allows it to mount directly onto the vehicle's hydraulic oil tank side walls, saving plumbing space.
Dual Pressure Protection: Houses a primary cartridge relief valve alongside an integrated load check valve to prevent the loaded tipper body from dropping instantly if a primary pressure line is severed.
Heavy-Duty Shock Resistance: High-grade cast bodies engineered to handle massive dynamic spikes and cold-temperature flow shocks typical in mining, aggregate hauling, and heavy construction environments.
| Parameter | Range / Value | Metric & Imperial Units | Notes |
|---|---|---|---|
| Nominal Flow Rating | 220 | L/min (approx. 58 US gpm) | High-flow design enables fast lifting of large multi-stage dump cylinders and shortens unloading cycle time. |
| Max. Working Pressure | 250 | bar (approx. 3625 psi) | Maximum continuous safe operating pressure that the valve body structure can withstand. |
| Relief Pressure Range | 170 ~ 250 | bar (approx. 2465 ~ 3625 psi) | Built-in main relief valve allows precise on-site adjustment according to the tonnage limit of dump tipping cylinders. |
| Pneumatic Pilot Pressure | 6.0 ~ 10.0 | bar (approx. 87 ~ 145 psi) | Perfectly matches the air supply pressure of standard pneumatic brake systems for heavy-duty trucks and commercial vehicles. |
| Pilot Start Pressure | 0.6 ~ 1.0 | bar (approx. 8.7 ~ 14.5 psi) | Minimum air pressure to initiate slight spool displacement of the pneumatic pilot valve for ultra-fine proportional micro-movement. |
| Control Method | Pneumatic Proportional | Pneumatic Proportional | Matches the in-cab pneumatic control handle; the return oil valve opening is proportionally adjusted according to air pressure magnitude. |
| Hold Function | Yes (with integrated load check) | Integrated Load Check | When the control handle is in neutral position, the heavy-duty cargo box can be firmly locked at any height even under pipeline impact. |
| Fluid Temp. Range | -25 ~ 80 | °C (-13°F to 176°F) | Adopts low-temperature resistant, high-elastic heavy-duty sealing components, suitable for cold northern mining areas and high-temperature southern construction sites. |
Applications
Heavy-Duty Rigid Dump Trucks (Tipper Trucks)
Acts as the primary control valve for 3-axle and 4-axle rigid tippers used in mining, quarrying, and excavation.
Controls the rapid lifting of aggregate loads (gravel, sand, stone) and ensures safe, smooth bucket lowering on uneven construction sites.
Commercial Semi-Trailers & Bulk Tipping Trailers
Manages the extensive oil volume required for large multi-stage telescopic cylinders on rear-dumping semi-trailers.
Enables precise proportional slowing when dropping long, high-capacity aluminum or steel grain and coal trailer beds.
Articulated Dump Trucks (ADTs)
Fits the compact chassis spaces of earthmoving articulated tippers, handling rapid duty cycles in rough off-road terrain.
Protects the articulated joint and main cylinders from structural stress during fast-paced material dumping.
Agricultural Dump Trailers & Silage Tippers
Controls heavy-duty farm tipping wagons and organic waste haulers that require steady, non-jerky lowering to prevent vehicle tipping on soft farm soil.
Municipal & Waste Management Vehicles
Powers large hook-lift containers and roll-off tipper systems where heavy bins must be slowly feathered down onto the truck frame during drop-off cycles.
Ptm 1220 250 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.
Traditional dump truck valves only offer a simple ON/OFF or high-speed lowering action, which causes the heavy dump bed to crash violently onto the truck chassis when empty or partially loaded. The proportional slow-reduction lowering mechanism allows the operator to control the return oil flow rate dynamically via an air joystick in the cabin. By feathering the control, you can decelerate the bed smoothly as it approaches the frame, eliminating structural impact shocks, reducing noise, and extending the life of the hydraulic cylinder seals.
The valve frame is engineered with a special flat flange configuration that allows it to be mounted directly onto the side wall of the hydraulic oil tank. This direct-tank setup eliminates the need for a massive, high-diameter low-pressure suction/return hose between the valve and reservoir. It significantly minimizes potential oil leak points, reduces total installation space on the truck chassis, and allows return oil to dump directly back into the tank with zero pipe resistance.
Yes, we support OEM and customization, including nameplate, packaging, and specific performance requirements. Send us your drawings or specifications for evaluation.
Ptm 1220 250 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.
