SP08 - 20 Seat Valve, 2 - Way, Normally Closed
1. Product Overview
The SP08 - 20 is a two - way seat valve with a normally closed configuration. Seat valves are known for their reliable sealing performance, and this particular model is designed to control the flow of fluid in a hydraulic or pneumatic system by allowing or blocking the passage between two ports.
2. Working Principle
• Normal State: In its default, unactuated state, the valve remains closed. This is achieved through a spring - loaded mechanism that presses a seat against a valve poppet or disc, creating a tight seal and preventing fluid flow between the two ports.
• Actuation: When an external force, such as an electrical signal (in the case of a solenoid - actuated valve) or a mechanical force, is applied to the valve, it overcomes the spring force. This causes the seat to move away from the poppet or disc, opening the valve and allowing fluid to flow from one port to the other. Once the actuating force is removed, the spring returns the valve to its closed position.
3. Product Features
• High Sealing Performance: The seat - poppet/disc design ensures excellent sealing, minimizing internal leakage even under high - pressure conditions. This is crucial for applications where precise flow control and prevention of fluid loss are required.
• Compact Design: The SP08 - 20 has a relatively small and compact structure, which makes it easy to install in systems with limited space. It can be integrated into various hydraulic or pneumatic circuits without taking up excessive room.
• Quick Response: The valve is designed to respond quickly to actuation signals. Whether it is an electrical or mechanical actuation, the valve can open or close in a short period, enabling fast control of fluid flow and pressure changes in the system.
• Durable Construction: Made from high - quality materials, the valve is resistant to wear, corrosion, and fatigue. This ensures a long service life, reducing the need for frequent maintenance and replacement, and thus lowering overall operating costs.
4. Application Scenarios
• Hydraulic Systems: In hydraulic power units, the SP08 - 20 can be used to control the flow of hydraulic fluid to different actuators, such as cylinders and motors. For example, in a simple hydraulic press system, it can be used to start and stop the movement of the press ram by controlling the fluid flow to the cylinder.
• Pneumatic Systems: In pneumatic control systems, it can regulate the air flow to pneumatic cylinders, air grippers, and other pneumatic devices. In an automated assembly line, it can be used to control the operation of pneumatic grippers for picking and placing components.
• Industrial Automation: The valve is suitable for various industrial automation applications where precise control of fluid flow is necessary. It can be integrated into programmable logic controller (PLC) - based systems for automated control of processes, such as in material handling, packaging, and testing equipment.
5. Technical Parameters (Example)
• Port Size: The valve may have specific port sizes, such as 1/8 inch or 1/4 inch, which determine the maximum flow rate it can handle.
• Operating Pressure Range: It can typically operate within a certain pressure range, for example, from 0 to 350 bar (0 to 5076 psi), depending on the design and materials used.
• Flow Capacity: The flow capacity of the valve, measured in liters per minute (L/min) or cubic feet per minute (CFM), indicates the maximum amount of fluid it can pass through when fully open. This parameter is important for selecting the right valve for a specific application to ensure sufficient flow to meet the system requirements.
• Actuation Type: It can be actuated by different means, such as solenoid actuation (where an electrical current is used to move the valve), or manual actuation (using a lever or knob). The choice of actuation type depends on the application requirements and the level of automation needed.
