| Quantity: | |
|---|---|
Langch
Pneumatic pilot check valve is a type of check valve used in pneumatic systems to control the direction of air flow, allowing air to flow in one direction while preventing backflow. The “pilot” feature allows the valve to be opened in the reverse direction when a pilot pressure signal is applied. This added control makes pneumatic pilot check valves particularly useful in complex pneumatic circuits where controlled backflow is occasionally necessary.
Pneumatic spray valve is a specialized device used in industrial applications to control the spraying of fluids such as adhesives, lubricants, coatings, or other liquids. These valves are designed to provide precise control over the spray pattern, volume, and flow rate, making them ideal for applications requiring consistent and accurate fluid dispensing.
Key Features
1. Directional Flow Control: Allows air to flow in one direction and prevents backflow under normal conditions.
2. Pilot Actuation: A pilot pressure can override the check valve function, allowing flow in the reverse direction.
3. Compact Design: Small and lightweight, making them easy to integrate into pneumatic systems.
4. High Durability: Made from robust materials like brass, stainless steel, or aluminum to withstand industrial environments.
5. Low Pressure Drop: Engineered to minimize pressure loss across the valve, maintaining system efficiency.
6. Sealed Operation: Features seals (often made from materials like NBR, Viton, or EPDM) to ensure leak-free performance.
Applications
1. Industrial Automation: Used in automated systems for controlling pneumatic actuators and cylinders.
2. Machine Tools: Integrated into machinery to manage air flow in pneumatic tools and devices.
3. Material Handling: Employed in systems like conveyors and robotic arms for precise control of pneumatic movements.
4. Packaging Equipment: Utilized in packaging machines to control air flow for various operations.
5. Automotive: Applied in pneumatic systems within automotive manufacturing and testing.
6. Robotics: Used in robotic systems for precise control of pneumatic actuators and grippers.
Working Principle
1. Normal Operation: In the default state, the valve allows air to flow in one direction (from inlet to outlet) while preventing flow in the opposite direction.
2. Pilot Activation: When a pilot pressure is applied to the valve, it overrides the check mechanism, allowing air to flow in the reverse direction.
3. Return to Check Valve Function: Once the pilot pressure is removed, the valve returns to its normal check valve function, preventing backflow.
Selection Criteria
• Material Compatibility: Ensure the valve materials are compatible with the type of air and environmental conditions.
• Pressure Rating: Select a valve that can handle the maximum operating pressure of your pneumatic system.
• Flow Rate: Choose a valve with an appropriate flow coefficient (Cv) to meet your system’s flow requirements.
• Port Size: Ensure the valve’s port size matches the tubing or piping in your system.
• Pilot Pressure Requirement: Check the required pilot pressure to ensure compatibility with your system’s control pressure.
Example Specifications
• Material: Typically available in brass, stainless steel, or aluminum.
• Pressure Range: Commonly rated for pressures up to 10 bar (145 psi) or higher.
• Temperature Range: Designed to operate effectively within a range of temperatures, typically from -20°C to 80°C (-4°F to 176°F).
• Port Sizes: Available in various port sizes, such as 1/8”, 1/4”, 3/8”, or 1/2” NPT or BSP.
Benefits
• Enhanced Control: The pilot function allows for more complex control schemes in pneumatic systems.
• Increased Flexibility: Enables manual override of the check function for maintenance or specific operational needs.
• Improved Safety: Prevents backflow, reducing the risk of damage to components or unsafe operating conditions.
Pneumatic pilot check valve is a type of check valve used in pneumatic systems to control the direction of air flow, allowing air to flow in one direction while preventing backflow. The “pilot” feature allows the valve to be opened in the reverse direction when a pilot pressure signal is applied. This added control makes pneumatic pilot check valves particularly useful in complex pneumatic circuits where controlled backflow is occasionally necessary.
Pneumatic spray valve is a specialized device used in industrial applications to control the spraying of fluids such as adhesives, lubricants, coatings, or other liquids. These valves are designed to provide precise control over the spray pattern, volume, and flow rate, making them ideal for applications requiring consistent and accurate fluid dispensing.
Key Features
1. Directional Flow Control: Allows air to flow in one direction and prevents backflow under normal conditions.
2. Pilot Actuation: A pilot pressure can override the check valve function, allowing flow in the reverse direction.
3. Compact Design: Small and lightweight, making them easy to integrate into pneumatic systems.
4. High Durability: Made from robust materials like brass, stainless steel, or aluminum to withstand industrial environments.
5. Low Pressure Drop: Engineered to minimize pressure loss across the valve, maintaining system efficiency.
6. Sealed Operation: Features seals (often made from materials like NBR, Viton, or EPDM) to ensure leak-free performance.
Applications
1. Industrial Automation: Used in automated systems for controlling pneumatic actuators and cylinders.
2. Machine Tools: Integrated into machinery to manage air flow in pneumatic tools and devices.
3. Material Handling: Employed in systems like conveyors and robotic arms for precise control of pneumatic movements.
4. Packaging Equipment: Utilized in packaging machines to control air flow for various operations.
5. Automotive: Applied in pneumatic systems within automotive manufacturing and testing.
6. Robotics: Used in robotic systems for precise control of pneumatic actuators and grippers.
Working Principle
1. Normal Operation: In the default state, the valve allows air to flow in one direction (from inlet to outlet) while preventing flow in the opposite direction.
2. Pilot Activation: When a pilot pressure is applied to the valve, it overrides the check mechanism, allowing air to flow in the reverse direction.
3. Return to Check Valve Function: Once the pilot pressure is removed, the valve returns to its normal check valve function, preventing backflow.
Selection Criteria
• Material Compatibility: Ensure the valve materials are compatible with the type of air and environmental conditions.
• Pressure Rating: Select a valve that can handle the maximum operating pressure of your pneumatic system.
• Flow Rate: Choose a valve with an appropriate flow coefficient (Cv) to meet your system’s flow requirements.
• Port Size: Ensure the valve’s port size matches the tubing or piping in your system.
• Pilot Pressure Requirement: Check the required pilot pressure to ensure compatibility with your system’s control pressure.
Example Specifications
• Material: Typically available in brass, stainless steel, or aluminum.
• Pressure Range: Commonly rated for pressures up to 10 bar (145 psi) or higher.
• Temperature Range: Designed to operate effectively within a range of temperatures, typically from -20°C to 80°C (-4°F to 176°F).
• Port Sizes: Available in various port sizes, such as 1/8”, 1/4”, 3/8”, or 1/2” NPT or BSP.
Benefits
• Enhanced Control: The pilot function allows for more complex control schemes in pneumatic systems.
• Increased Flexibility: Enables manual override of the check function for maintenance or specific operational needs.
• Improved Safety: Prevents backflow, reducing the risk of damage to components or unsafe operating conditions.
