DA(W) Series Pilot Operated Pressure Shut-off Hydraulic Valve
The DA(W) series pilot-operated pressure shut-off hydraulic valve is an exceptional component designed to provide safe and reliable pressure control in hydraulic systems. With its innovative pilot-operated design and remarkable features, this valve ensures efficient regulation of hydraulic pressures, optimizing system performance across various applications.
The DA(W) series pilot-operated pressure shut-off hydraulic valve is the ultimate solution for safe and reliable pressure control in hydraulic systems. With its pilot-operated design, safe pressure control, shut-off functionality, and versatile pressure range, this valve ensures efficient and secure operation of hydraulic systems. By following the recommended usage methods and maintenance practices, the DA(W) series valve delivers consistent performance, extending the lifespan of hydraulic systems. Upgrade your hydraulic system with the DA(W) series pilot-operated pressure shut-off hydraulic valve and experience superior pressure control and shut-off capabilities for enhanced system safety and reliability.
DA(W) Series Pilot Operated Pressure Shut-off Hydraulic Valve Key Characteristics:
- Pilot-Operated Design:
- The DA(W) series valve features a pilot-operated design, utilizing a small control valve to regulate the main shut-off valve.
- This design enhances control precision, responsiveness, and stability, ensuring accurate pressure control and shut-off functionality.
- Safe Pressure Control:
- This valve provides a safe and reliable solution for pressure control in hydraulic systems.
- It effectively prevents pressure spikes, overloads, and potential damage to system components, ensuring optimal system safety.
- Shut-off Functionality:
- The DA(W) series valve is equipped with a shut-off feature, allowing for instant blocking of hydraulic flow when necessary.
- This shut-off functionality is crucial in emergency situations or when rapid cessation of hydraulic fluid flow is required.
- Versatile Pressure Range:
- The valve is available in various pressure ranges, catering to different hydraulic system requirements.
- This versatility allows customization to suit specific pressure control needs, accommodating a wide range of applications.
DA(W) Series Pilot Operated Pressure Shut-off Hydraulic Valve Parameter:
| Fluid | Mineral oil suitable for NBR and FKM seal | ||||
| Phosphate ester for FKM seal | |||||
| Fluid temperature range | ℃ | -30 to +80 (NBR seals) | |||
| -20 to +80 (FKM seals) | |||||
| Viscosity range | mm2/s | 10 to 800 | |||
| Degree of contamination | Maximum permissible degree of fluid contamination: Class 9. NAS 1638 or 20/18/15, ISO4406 | ||||
| Max. operating pressure | Port A | bar | 315 | ||
| Max. setting pressure | bar | 50 100 200 315 | |||
| Size | 10 | 25 | 32 | ||
| Max. flow-rate | L/min | 60 | 120 | 240 | |
| Techinical parameters of directional valve | Refer to the solenoid valvetype WE6 type,normally close use 3WE6A9, normally open use 3WE6B9 | ||||
| Installation position | Optional | ||||
| Size | 10 | 25 | 32 | ||
| Weight | DA | kg | about 3.8 | about 7.9 | about 12.3 |
| DAW | kg | about 5.3 | about 9.4 | about 13.8 | |
| DAC | kg | about 1.2 （If version DAWC, add 1.5 kg） | |||
| DAC30 | kg | about 1.5 （If version DAWC30, add 1.5 kg） | |||
DA(W) Series Pilot Operated Pressure Shut-off Hydraulic Valve Advantages:
• Used for bottom sub-plate mounting
• Installation face follows DIN 24340 D and ISO 5781
• Used in oil path block installation
• Four pressure ranges
• Two adjustment types: knob, adjustment screw with protection cap
• Solenoidic unload valve
Usage Method Of DA(W) Series Pilot Operated Pressure Shut-off Hydraulic Valve:
- System Analysis:
- Conduct a comprehensive analysis of your hydraulic system to determine specific pressure control requirements.
- Consider desired pressure levels, flow rates, and system safety protocols.
- Valve Selection:
- Select the appropriate variant of the DA(W) series valve based on your system’s pressure control specifications.
- Consider pressure rating, flow capacity, and compatibility with other system components.
- Installation:
- Follow the manufacturer’s instructions to install the DA(W) series pilot correctly operated pressure shut-off valve in your hydraulic system.
- Ensure proper alignment and secure connections to prevent leaks and optimize performance.
- Calibration and Adjustment:
- Calibrate the valve to set the desired pressure levels and shut-off parameters.
- Utilize pressure gauges or other measurement devices to accurately adjust the valve for optimal pressure control and shut-off functionality.
How Does A Hydraulic Spool Valve Work?
A hydraulic spool valve is a type of directional control valve used in hydraulic systems to control the direction of fluid flow. It consists of a cylindrical spool that slides within a valve body and has various ports and passages. The movement of the spool determines which ports are open or closed, thereby directing the hydraulic fluid to different actuators or hydraulic components. Here’s a step-by-step explanation of how a hydraulic spool valve works:
- Valve Construction:
- A hydraulic spool valve typically consists of a valve body, a spool, and control mechanisms such as handles or solenoids.
- The valve body contains the ports, passages, and chambers for fluid flow.
- The spool is a cylindrical component with lands, or sections, that block or allow fluid flow depending on its position.
- Control mechanisms, such as handles or solenoids, move the spool.
- Neutral Position:
- In the neutral position, the spool is centered within the valve body, blocking all fluid flow between the ports.
- This prevents hydraulic fluid from entering or exiting the valve.
- Handle/Solenoid Actuation:
- When a handle is moved or a solenoid is energized, it exerts a force on the spool, causing it to shift from the neutral position.
- The spool movement is typically achieved by mechanical linkage or hydraulic pressure acting on the spool.
- Port Opening and Closing:
- As the spool moves, it uncovers specific ports and passages within the valve body.
- This allows hydraulic fluid to flow from the inlet port to the desired outlet port.
- Directional Fluid Flow:
- The position of the spool determines the flow direction of the hydraulic fluid.
- For example, if the spool is shifted to the left, it connects the inlet port to the left outlet port, allowing fluid to flow in that direction.
- Similarly, when the spool is shifted to the right, fluid flows from the inlet port to the right outlet port.
- Control of Actuators:
- By connecting the appropriate ports to actuators such as cylinders or hydraulic motors, the spool valve controls their movement.
- Depending on the configuration, the spool valve can enable, disable, or reverse the operation of hydraulic actuators.
- Return to Neutral Position:
- When the handle is released or the solenoid is de-energized, the spool returns to the neutral position.
- This blocks fluid flow between the ports, stopping actuator movement and maintaining system stability.
Capability & Capacity Of Factory:
(1) Assembly
We have a first-class independent research and development assembly platform. The hydraulic cylinder production workshop has four semi-automatic lifting cylinder assembly lines and one automatic tilt cylinder assembly line, with a designed annual production capacity of 1 million pieces. The special cylinder workshop is equipped with various specifications of a semi-automatic cleaning assembly system with a designed annual production capacity of 200,000 and equipped with famous CNC machining equipment, a machining center, a high-precision cylinder processing special equipment, a robot welding machine, an automatic cleaning machine, automatic cylinder assembly machine, and automatic painting production line. Existing critical equipment of more than 300 sets (sets). The optimal allocation and efficient use of equipment resources ensure the accuracy requirements of products and meet the high-quality needs of products.
(2) Machining
The machining shop is equipped with a customized inclined rail turning center, machining center, high-speed honing machine, welding robot, and other related equipment, which can handle the processing of cylinder tubes with a maximum inner diameter of 400mm and a maximum length of 6 meters.
(3) Welding
(4) Painting & coating
With small and medium-sized cylinder automatic water-based paint coating lines, to achieve automatic robot loading and unloading and automatic spraying, the design capacity of 4000 pieces per shift;
We also have a semi-automatic paint production line for large cylinders powered by a power chain, with 60 cases per shift design capacity.
(5) Testing
We have first-class inspection facilities and test beds to ensure that the performance of the cylinder meets the requirements.
We are one of the best hydraulic cylinder manufacturers. We can offer comprehensive hydraulic cylinders. We also provide corresponding agricultural gearboxes. We have exported our products to clients worldwide and earned a good reputation because of our superior product quality and after-sales service. We welcome customers at home and abroad to contact us to negotiate business, exchange information, and cooperate with us!