| Quantity: | |
|---|---|
| Product Type | Directional valve |
| Model Number | DCV45DQ-5OT-DQK |
| Rated pressure | 250bar |
| Rated flow | 40-120L/min |
| Operating range | 15-75mm2/s |
| Working temperature | -40 to 80℃ |
| Min viscosity | 12mm2/s |
| Max viscosity | 400mm2/s |
| Monoblock | 1-7 sections |
| Control type | manual, joystick, cable, pneumatic, electro-hydraulic, etc |
The DCV45DQ-5OT-DQK is engineered as a high-pressure directional control valve, operating at 250 bar with a broad 40-120 L/min flow range. This makes it ideally suited for heavy-duty construction equipment like excavators and cranes, where high pressure translates to greater force for digging and lifting, while the wide flow range allows for optimized control of both speed and power. This capability directly enhances productivity by enabling faster cycle times without sacrificing performance. For equipment owners, this means completing more work in less time, improving project timelines and profitability. The high-pressure design also contributes to a more compact system layout, saving valuable space in complex machinery. Choose the DCV45DQ-5OT-DQK to power your most challenging applications with efficiency and strength.
Flexibility is at the core of this valve's design. As a modular multi-section directional valve, it can be configured with 1 to 7 sections to create a custom hydraulic control manifold tailored to specific machine functions. This is essential for modern machinery like concrete pump trucks and advanced loaders that require precise, coordinated control of multiple actuators—such as booms, arms, and buckets—from a single, integrated unit. This modularity drastically simplifies the overall hydraulic system, reducing the complexity of piping and connections. For our clients, this means they can specify the exact number of sections needed, avoiding cost overruns from unnecessary functions, while also benefiting from easier maintenance and future upgrades, as individual sections can be serviced or replaced independently.
This valve's standout feature is its integration of manual, pneumatic, solenoid, and electro-hydraulic control methods, making it a truly versatile electro-hydraulic control valve. This provides unparalleled operational flexibility. For example, in a refuse collection vehicle, operators can use manual control for precise positioning during loading and then switch to automated electro-hydraulic control for efficient transport and dumping cycles. This adaptability allows a single machine to excel in varied tasks and environments. The inclusion of electro-hydraulic remote control is particularly significant, as it paves the way for semi-automated or fully remote-operated machinery, meeting the growing industry trend towards smarter, safer, and more efficient construction sites and industrial operations.
Built to endure, the DCV45DQ-5OT-DQK is a reliable hydraulic valve for off-road equipment. It utilizes high-strength materials and advanced sealing technology to withstand the extreme challenges of construction, mining, and drilling sites, including intense vibration, abrasive dust, and mechanical shock. The superior sealing effectively prevents fluid leaks and blocks contaminant ingress, which are primary causes of hydraulic system failure. For our customers, this robust construction translates directly into higher machine availability (uptime) and a longer service life. It reduces the frequency of failures and the associated maintenance costs, ensuring that equipment remains operational and profitable even in the world's most challenging working environments.
Safety and reliability are engineered into the DCV45DQ-5OT-DQK with its integrated safety and overload valves. These features provide critical protection for the entire hydraulic system. In applications like crane operation, the safety valve prevents dangerous pressure build-up in the event of an overload, while the overload valve protects cylinders and motors from shock loads that can cause catastrophic damage. For the end-user, this integrated safety package enhances operational safety, reduces the risk of costly equipment damage, and lowers total system cost by eliminating the need for additional, external safety components. The precise and rapid response of these valves ensures protection is both immediate and accurate, contributing to superior system stability and longevity. Invest in a valve that prioritizes safety and protects your valuable equipment.
To ensure accurate compatibility and safe operation, please review the following critical parameters prior to placing an order. We strongly recommend consulting our technical engineers if you are unsure about any of the following:
1. Hydraulic Power Source (Pump Flow & Pressure)
Verify your hydraulic pump's maximum flow rate (L/min) and working pressure (MPa/Bar). The nominal capacity of our valve assembly must exceed your pump's maximum output. Operating the valve beyond its rated specifications will cause internal leakage, seal failure, and potential valve body rupture.
2. Electrical System Voltage (For Solenoid-Controlled Models)
For valves with electric solenoid controls, confirm your machinery's power supply (12V DC or 24V DC). Supplying a 12V coil with 24V power will result in immediate coil burnout. Conversely, a 24V coil supplied with 12V will fail to actuate the spool. We can supply coils for both systems upon request.
3. Port Configurations and Thread Standards
Ensure the valve's oil ports match your existing hose assemblies. Please specify the required thread standard: G (BSPP), NPT (American standard), or Metric threads. Provide the specific port size (e.g., G1/2, G3/4, 1/2" NPT). Mismatched threads will prevent sealing and cause high-pressure leaks.
4. Mounting Space and Installation Dimensions
Accurate mechanical fitting requires precise measurements. We request the center-to-center distance of the mounting bolt holes, as well as the overall length, width, and height of the available installation space on your equipment. This prevents interference with adjacent components.
To facilitate the most accurate matching, we invite you to send a photograph of your current valve assembly or a clear picture of your hydraulic pump nameplate. Our engineering team can typically provide a definitive compatibility confirmation within 24 hours.
Q: What voltage should I choose for the solenoid control?
A:The solenoid voltage must strictly match your machinery's battery system. We offer both 12V DC and 24V DC options. If your equipment uses a 12V battery, you must choose the 12V coil; for a 24V system, choose the 24V coil.
If you are unsure about your system voltage, please consult your equipment manual or our sales team for confirmation before ordering.
A:It depends entirely on your safety requirements and actuator type:
Hydraulic Lock (Dual Pilot-Operated Check Valves): We strongly recommend installing a hydraulic lock if your system involves lifting and suspending heavy loads. This prevents the cylinder from slowly drifting downward due to internal valve leakage, ensuring worker and equipment safety.
Pressure Relief Valve (PRV): Almost all our valve assemblies come with an integrated pressure relief valve to protect your pump and system from overpressure. However, the factory default setting pressure can be adjusted to match your specific requirements. Please inform us of your target setting pressure, and we will pre-set it for you before shipping.
Q: What is the typical service life of this valve, and how do I maintain it?
A:With proper maintenance and a clean hydraulic system, our valve assemblies typically offer a service life of over 3 to 5 years under normal operating conditions. The most critical factor for longevity is the cleanliness of your hydraulic oil. Contaminated oil is the primary cause of premature spool wear and internal leakage.
We recommend replacing your hydraulic oil filter regularly according to your machinery's manual. Additionally, ensure the system operating temperature stays below 80°C (176°F) to protect the internal seals. Our valve bodies and solenoid coils are fully replaceable, ensuring low long-term maintenance costs.
Q : What should I do if I encounter problems during installation or testing?
A:We provide comprehensive technical support throughout your installation and testing process.
Paperwork: Every valve comes with a basic installation and wiring diagram.
Online Support: We offer 24-hour online customer service. For complex issues, we can arrange a video call to guide you through troubleshooting step-by-step.
