DZ Series Direct Operated Pressure Sequence Hydraulic Valve
The DZ series direct-operated pressure sequence hydraulic valve is a high-performance component that provides accurate pressure sequencing in hydraulic systems. With its direct-operated design and exceptional functionality, this valve ensures precise control over the sequence of hydraulic pressures, enabling efficient operation of various hydraulic circuits.
The DZ series direct-operated pressure sequence hydraulic valve is a reliable solution for precise pressure sequencing in hydraulic systems. With its direct-operated design, accurate pressure control, wide pressure range, and reliable performance, this valve ensures efficient and coordinated operation of multiple hydraulic circuits. By following the recommended usage methods and maintenance practices, the DZ series valve delivers consistent performance, extending the lifespan of hydraulic systems. Upgrade your hydraulic system with the DZ series direct operated pressure sequence hydraulic valve and experience optimal pressure sequencing for enhanced system efficiency and productivity.
DZ Series Direct Operated Pressure Sequence Hydraulic Valve Key Characteristics:
- Direct-Operated Design:
- The DZ series valve features a direct-operated design, eliminating the need for external pilot circuits.
- This design simplifies installation, reduces system complexity, and improves overall efficiency.
- Accurate Pressure Sequencing:
- This valve offers exceptional accuracy in pressure sequencing, allowing precise control over the order of hydraulic pressures in different circuits.
- It ensures multiple hydraulic components’ smooth and coordinated operation, optimizing system performance.
- Reliable Performance:
- The DZ series valve is built to deliver reliable and consistent performance under varying operating conditions.
- It maintains pressure sequencing integrity, even in demanding applications with high flow rates and pressure differentials.
- Wide Pressure Range:
- The valve is available in various pressure ranges, ensuring compatibility with diverse hydraulic systems.
- This flexibility allows customization to meet specific pressure sequencing requirements, enhancing system efficiency.
DZ Series Direct Operated Pressure Sequence Hydraulic Valve Parameter:
| Specifications | NG6 | NG10 | |||
| Fluid | Mineral oil suitable for NBR and FKM seal | ||||
| Phosphate ester for FKM seal | |||||
| Fluid temperature range | ℃ | -30 ~ +80 (NBR seals) | |||
| -20 ~ +80 (FKM seals) | |||||
| Viscosity range | mm2/s | 10 ~ 800 | |||
| Degree of contamination | Maximum permissible degree of fluid contamination: Class 9. NAS 1638 or 20/18/15, ISO4406 | ||||
| Max. operating pressure | Port A, B, X | bar | 315 | 210 | |
| Port Y | bar | 160 | |||
| Max sequence pressure set | bar | 25; 75; 150; 210; 315 | / | ||
| Max sequence pressure set(adjustable) Port B | bar | / | 25; 75; 150; 210; | ||
| Max. flow-rate | L/min | 60 | 80 | ||
| Weight | kg | about 1.6 | about 3 | ||
DZ Series Direct Operated Pressure Sequence Hydraulic Valve Advantages:
NG6
• Direct structure
• Installation face follow DIN 24340 A and ISO 4401
• Five pressure ranges
• Two adjustment types: knob, adjustment screw with protection cap
• With pressure gauge interface
• Optional one directional valve
NG10
• Direct structure
• Installation face follow DIN 24340 A and ISO 4401
• Four pressure ranges
• Two adjustment types: knob, adjustment screw with protection cap
• With pressure gauge interface
• Optional one directional valve
Usage Method Of DZ Series Direct Operated Pressure Sequence Hydraulic Valve:
- System Analysis:
- Perform a comprehensive hydraulic system analysis to determine the specific pressure sequencing requirements.
- Consider factors such as the desired order of pressure activation, pressure differentials, and flow rates in different circuits.
- Valve Selection:
- Select the appropriate DZ series valve variant based on the pressure sequencing specifications.
- Consider pressure rating, flow capacity, and compatibility with other system components.
- Installation:
- Follow the manufacturer’s instructions to correctly install the DZ series direct operated pressure sequence valve in the hydraulic system.
- Ensure proper alignment and secure connections to prevent leaks and optimize performance.
- Calibration:
- Calibrate the valve to set the desired pressure sequence.
- Utilize pressure gauges or other measurement devices to adjust the valve for optimal pressure control accurately.
How Does A Hydraulic Sequence Valve Work?
A hydraulic sequence valve is a type of pressure control valve used in hydraulic systems to control the order in which different hydraulic operations occur. It is designed to ensure that one hydraulic operation takes place before another, based on specific pressure requirements. Here’s how a hydraulic sequence valve works:
- Valve Construction:
- A sequence valve consists of a valve body with inlet and outlet ports, a valve spool or poppet, and a spring or other mechanism that controls the valve’s opening pressure.
- Pressure Setting:
- The sequence valve is pre-set to open at a specific pressure. This pressure is typically adjustable to meet the system’s requirements.
- The pressure setting determines the threshold at which the valve will open and allow fluid flow from the inlet port to the outlet port.
- Normal State:
- In the normal state, when the pressure at the inlet port is below the valve’s set pressure, the sequence valve remains closed.
- This prevents fluid flow from the inlet to the outlet port, maintaining a blocked or closed position.
- Opening and Fluid Flow:
- When the pressure at the inlet port exceeds the pre-set pressure of the sequence valve, it reaches the opening pressure.
- Once the opening pressure is reached, the valve spool or poppet moves, allowing fluid flow from the inlet port to the outlet port.
- Sequencing Operation:
- As fluid flows through the sequence valve, it activates downstream hydraulic operations.
- The fluid pressure at the outlet port is maintained at the set pressure, ensuring that the subsequent hydraulic operation receives sufficient pressure to begin.
- Pressure Relief:
- Once the downstream operation is complete, the fluid pressure at the outlet port decreases.
- When the pressure at the outlet port falls below the set pressure of the sequence valve, the valve spool or poppet returns to its closed position, blocking fluid flow.
- Reset and Repeat:
- The sequence valve is then ready for the next cycle. As the pressure at the inlet port increases again, it will open at the pre-set pressure, and the sequence of operations will continue.
- Application Examples:
- Hydraulic sequence valves are commonly used in applications such as clamping, lifting, pressing, or any process where a specific sequence of hydraulic operations is required.
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!