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DCV40
cissoko
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The DCV40 Sectional Directional Control Valve is a highly modular, heavy-duty hydraulic spool valve designed for compact mobile machinery and industrial systems. Unlike the P40 monoblock valve, the DCV40 features a sectional (sandwich) design, meaning each working valve segment is built as an independent slice and bolted together. It is optimized to handle fluid volumes of up to 40 Liters per minute (approx. 11 GPM).
Auxiliary Port Valves (Optional): Every individual section can be outfitted with its own auxiliary pressure relief valve or anti-cavitation valve. This allows you to set a lower maximum pressure for a delicate tool on Circuit A while allowing Circuit B to run at full system pressure.
Parallel or Series Circuitry: It standardizes on a parallel circuit design but can be configured for specialized series or tandem circuit logic depending on how the internal oil galleries are configured.
Built-In Safety and Load Retention: Features a main adjustable system relief valve on the inlet section and independent load-holding check valves inside every working slice to prevent accidental load sagging.
Power Beyond & Closed-Center Ready: Easily converts between open-center, closed-center, or Power Beyond configurations by changing simple screw-in plugs in the outlet section.
| Parameter | Official Value | Unit | Remarks |
|---|---|---|---|
| Construction | Sectional / Sandwich | — | Available with 1–8 working sections, assembled using high-strength tie rods |
| Modularity | Supports Multiple Spool Function Combinations | — | Double-acting, single-acting, and motor spools can be combined within the same valve assembly |
| Nominal Flow Rate | 40 | L/min | Recommended operating flow, approximately 10.6 GPM; suitable for compact hydraulic systems |
| Maximum Pressure – P Port | 250 (3,625) | bar (psi) | Maximum permissible continuous working pressure at the main inlet port on the inlet section |
| Maximum Pressure – A/B Ports | 300 (4,350) | bar (psi) | Maximum transient pressure permitted at the working ports of each valve section |
| Maximum Back Pressure – T Port | 50 (725) | bar (psi) | Maximum permissible back pressure at the return port; excessive pressure may damage the oil seals |
| Internal Relief Valve Adjustment Range | 50–250 | bar | Installed in the main inlet section; the factory setting is normally 175–180 bar |
| Auxiliary Port Valves | Optional | — | Individual secondary overload or anti-cavitation valves can be installed on selected working ports |
| Internal Leakage – A/B to T | ≤ 6 at 100 bar and 46 cSt | cm³/min | Minimal natural internal leakage when the spool is in the neutral position, helping prevent actuator drift |
Applications
Custom Agricultural Machinery: Specialized harvest headers, vineyard machinery, and compact tractors with diverse accessory attachments.
Forestry Equipment: Small timber cranes, wood processors, and tree grabbers requiring precise, individualized function pressures.
Municipal and Service Vehicles: Small tow trucks, truck-mounted salt spreaders, and mini-dumpers.
Industrial Power Units: Custom test benches and small automated factory machinery blocks.
DCV40 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.
Ultimate Modularity: The DCV40 is built in independent "slices" bolted together by tie rods. If one function breaks or needs a different spool style, you only replace or modify that specific slice rather than buying a whole new valve block.
Individual Section Tuning: Each section can be outfitted with its own secondary auxiliary relief valve. This allows you to set a lower pressure for a delicate cylinder on Section 1 while keeping full system pressure on Section 2.
Expandable Architecture: You can physically expand the valve block in the future from a 2-spool to a 3-spool or 4-spool system by purchasing an extra middle slice and longer tie rods.
Misaligned Section O-Rings: Each slice relies on tiny, precision-placed nitrile or Viton O-rings nestled inside machined counterbores on its mating face to seal the internal oil channels. If an O-ring slipped out of its groove during assembly, it will pinch and leak heavily.
Uneven Tie Rod Torque: The tie rods holding the "sandwich" together must be torqued evenly using a cross-pattern sequence to factory specifications. Overtightening will warp the sections and bind the spools, while undertightening fails to compress the face seals.
Yes, Fully Customizable: This is exactly what sectional valves are designed for. You can order a 3-bank DCV40 where Section 1 features a double-acting spring-return spool (for a loader arm), Section 2 has a single-acting spool (for a gravity-drop tipper), and Section 3 uses a detented motor spool (for a continuous hydraulic fan).
Independent Logic: The internal parallel galleries ensure each slice operates on its own valving logic without interfering with the mechanical structure of neighboring sections.
Debris in Load Check Valve: While a main system relief protects the whole valve, each independent slice contains its own internal load check valve (a small spring-loaded poppet). If a tiny piece of metal flake or dirt gets stuck underneath the poppet in Section 2, oil will slowly bypass backward, causing the cylinder to sag.
Worn Spool Clearances: Section 2 may have suffered more severe physical abrasive wear than Section 1, widening the microscopic metal-to-metal clearances between the sliding spool and the cast iron bore.
Outlet Block Modification: The modification is done entirely within the end outlet slice (the final section where the main T-port is located). You do not need to disassemble the individual working middle sections.
Install the Sleeve: Unscrew the plug in the designated "N" port on the outlet section and thread in a specialized DCV40 Power Beyond sleeve. This isolates the high-pressure neutral oil path, allowing you to run a high-pressure line downstream to feed a second valve block, while keeping the main T-port connected to the fluid reservoir.
Yes, we support OEM and customization, including nameplate, packaging, and specific performance requirements. Send us your drawings or specifications for evaluation.
DCV40 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 pump 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.
