I. Product Overview
• Type: Two-position three-way directional control valve, featuring two operating positions and three ports (inlet port P, working port A, and exhaust port O).
• Control Method: Pneumatic control, which changes the position of the valve spool through pneumatic signals to control fluid flow direction.
• Structural Forms:
• Normally Open Type (K23JK-L15~L25-T): In the absence of a pneumatic signal, the valve remains open, with the inlet port P connected to the working port A and the exhaust port O closed. When a pneumatic signal is received, the valve closes, blocking the passage between the inlet port P and the working port A while opening the exhaust port O.
• Normally Closed Type (K23JK-L15~L25): In the absence of a pneumatic signal, the valve remains closed, blocking the passage between the inlet port P and the working port A while the exhaust port O is open. When a pneumatic signal is received, the valve opens, connecting the inlet port P to the working port A and closing the exhaust port O.
II. Product Features
1. Excellent Sealing Performance: Utilizes an end-face planar sealing structure, offering superior sealing performance and long durability, effectively preventing leakage.
2. Sensitive and Reliable Operation: The valve spool has few sliding mating surfaces, resulting in a simple structure, reliable operation, and good dust resistance, making it particularly suitable for harsh working environments such as steel and foundry industries.
3. Rapid Response: Pneumatic control enables fast and accurate switching actions, improving system efficiency.
4. Compact Structure: Designed to be compact and easy to install, saving space and suitable for various compact pneumatic systems.
5. Strong Compatibility: Applicable to a wide range of air supply conditions and compatible with common pneumatic components, facilitating system integration.
6. Easy Maintenance: Modular design allows for simple disassembly and replacement of components, reducing maintenance costs and time.
III. Technical Parameters (Example)
• Nominal Bore (mm): 15, 20, 25, etc. (depending on the specific model).
• Operating Pressure Range (MPa): 0.15~0.8 (may vary for some products; refer to the specific product manual).
• Effective Cross-sectional Area (mm²): Varies with the nominal bore; for example, the K23JK-L15 may have an effective cross-sectional area of 60 mm² or higher.
• Switching Time (s): ≤0.15 (specific time may vary depending on the product model and operating conditions).
• Durability (10,000 cycles): ≥150 (some products may reach 200,000 cycles or higher).
• Minimum Control Pressure (MPa): 0.3 (the minimum air pressure required to ensure reliable switching of the valve).
• Ambient Temperature Range (℃): -5~60 (the ambient temperature range for normal valve operation).
• Port Sizes: Vary depending on the specific model; for example, L15TR may correspond to a 1/2" port, and L20TR to a 3/4" port, etc.
IV. Application Scenarios
• Automation Equipment: Used for precise air circuit switching in automation equipment to achieve automated control.
• Packaging Machinery: Ensures stable blowing actions in packaging machinery, guaranteeing packaging quality.
• Food Processing Equipment: A reliable choice for pneumatic control in food processing equipment, ensuring hygiene and safety during production.
• Other Industrial Fields: Widely applicable in textile machinery, woodworking machinery, printing machinery, and other industrial sectors requiring pneumatic control.
V. Selection and Usage Precautions
1. Model Selection Matching: Select appropriate parameters such as nominal bore, operating pressure range, and port sizes based on system requirements.
2. Air Supply Quality: Ensure that the air supply provided to the valve is clean and dry to prevent impurities from entering the valve and affecting performance.
3. Stable Pneumatic Signals: Ensure that the pneumatic signals provided to the valve are stable and reliable to prevent frequent switching or malfunction.
4. Regular Maintenance: Conduct regular maintenance and inspections on the valve, including cleaning the valve surface and checking for wear on the seals, to ensure normal operation and extend service life.
5. Installation Environment: In low-temperature environments, take anti-freezing measures to prevent condensed water from freezing and affecting valve operation.
