Products
0102030405
WENK Pneumatic 3A/4A Air Control Valve
Product Detail
Acting Mode |
External Control |
Working Media |
Air |
Working Pressure |
0~1.0Mpa |
Proof Pressure |
1.5Mpa |
Working Temperature Range |
-5℃~60℃ |
Body Material |
Aluminum Alloy |
3A/4A Series Pneumatic Control Valve User Manual
1. Product Overview
The WENK Pneumatic 3A/4A Series Pneumatic Control Valve is a high-performance directional control valve designed for precision control in pneumatic systems. Featuring a compact aluminum alloy body with mirror finish and hard oxidation treatment, this valve offers exceptional durability and long service life.
The 3A series is 3-port 2-position type, while the 4A series is 5-port 2/3-position type, providing versatile solutions for various automation applications.
2. Technical Specifications
2.1 Basic Parameters
- Series: 3A/4A
- Type: Pneumatic Control Directional Valve
- Working Medium: Compressed air filtered through 40μm filter
- Action Mode: Internal pilot type
- Lubrication: Not required
- Working Pressure Range: 0~1.0 MPa
- Maximum Proof Pressure: 1.5 MPa
- Operating Temperature Range: -5~60°C
- Maximum Action Frequency: 5 cycles/second
- Minimum Excitation Time: 0.05 seconds
2.2 Structural Parameters
- Valve Body Material: Aluminum alloy
- Seal Material: NBR
- Connection Type: Pipe connection
- Port Size:
- 3A Series: G1/8"
- 4A Series: G1/8", G1/4", G3/8", G1/2" (depending on model)
- Effective Cross-sectional Area:
- 3A Series: 14 mm² (Cv=0.78), 16 mm² (Cv=0.89)
- 4A Series: 12 mm² (Cv=0.67), 14 mm² (Cv=0.78), 16 mm² (Cv=0.89), 30 mm² (Cv=1.68), 50 mm² (Cv=2.79) (depending on model)
- 3A Series: G1/8"
- 4A Series: G1/8", G1/4", G3/8", G1/2" (depending on model)
- 3A Series: 14 mm² (Cv=0.78), 16 mm² (Cv=0.89)
- 4A Series: 12 mm² (Cv=0.67), 14 mm² (Cv=0.78), 16 mm² (Cv=0.89), 30 mm² (Cv=1.68), 50 mm² (Cv=2.79) (depending on model)
3. Installation Steps
-
Pre-installation Preparation
- Confirm that the air supply pressure is within the range of 0.15~0.8 MPa
- Ensure the air supply has been filtered through a 40μm filter
- Check that the valve model matches the installation requirements
-
Installation Location Selection
- Choose a well-ventilated location away from direct sunlight
- Ensure there is sufficient space around the valve for operation and maintenance
- Avoid installing on equipment with severe vibration
-
Piping Connection
- Confirm that the pipes are clean and free of impurities and moisture
- Connect the air inlet (P), air outlet (A/B), and exhaust port (R/S) according to the markings on the valve body
- Use appropriate sealing material (such as PTFE tape) to ensure a tight connection
- Be careful not to over-tighten the pipes to avoid damaging the valve body
-
Fixed Installation
- Use suitable bolts to fix the valve to the mounting surface
- Ensure the valve is securely installed without looseness
Pre-installation Preparation
- Confirm that the air supply pressure is within the range of 0.15~0.8 MPa
- Ensure the air supply has been filtered through a 40μm filter
- Check that the valve model matches the installation requirements
Installation Location Selection
- Choose a well-ventilated location away from direct sunlight
- Ensure there is sufficient space around the valve for operation and maintenance
- Avoid installing on equipment with severe vibration
Piping Connection
- Confirm that the pipes are clean and free of impurities and moisture
- Connect the air inlet (P), air outlet (A/B), and exhaust port (R/S) according to the markings on the valve body
- Use appropriate sealing material (such as PTFE tape) to ensure a tight connection
- Be careful not to over-tighten the pipes to avoid damaging the valve body
Fixed Installation
- Use suitable bolts to fix the valve to the mounting surface
- Ensure the valve is securely installed without looseness
4. Operation Guide
-
Initial Start-up
- Slowly open the air supply and observe if the valve operates normally
- Check for leaks at all connections
- Confirm that the valve action direction meets requirements
-
Normal Operation
- Control the valve switching through control signals
- Regularly check if the valve operates smoothly and accurately
- Monitor the pressure gauge to ensure working pressure is within the specified range
-
Emergency Stop
- In case of emergency, close the air supply shut-off valve
- If abnormal sounds or leaks are detected, stop use immediately and inspect
Initial Start-up
- Slowly open the air supply and observe if the valve operates normally
- Check for leaks at all connections
- Confirm that the valve action direction meets requirements
Normal Operation
- Control the valve switching through control signals
- Regularly check if the valve operates smoothly and accurately
- Monitor the pressure gauge to ensure working pressure is within the specified range
Emergency Stop
- In case of emergency, close the air supply shut-off valve
- If abnormal sounds or leaks are detected, stop use immediately and inspect
5. Maintenance
-
Daily Inspection
- Check for leaks at all connections
- Observe if the valve operates smoothly without abnormal noise
- Check if the air supply pressure is within the specified range
-
Regular Maintenance
- Every 3 months:
- Clean the exterior of the valve to remove dust and dirt
- Check if the pipe connections are secure
- Every 6 months:
- Inspect the condition of seals and replace them if aging or damage is found
- Clean the interior of the valve body to remove possible impurities
- Annually:
- Perform comprehensive performance testing
- Replace aging components such as springs and seals
-
Long-term Storage
- If not used for a long period, clean the interior and exterior of the valve
- Apply anti-rust agent to protect metal components
- Store in a dry, well-ventilated environment
- Regularly check the storage condition to prevent moisture and corrosion
Daily Inspection
- Check for leaks at all connections
- Observe if the valve operates smoothly without abnormal noise
- Check if the air supply pressure is within the specified range
Regular Maintenance
- Every 3 months:
- Clean the exterior of the valve to remove dust and dirt
- Check if the pipe connections are secure
- Every 6 months:
- Inspect the condition of seals and replace them if aging or damage is found
- Clean the interior of the valve body to remove possible impurities
- Annually:
- Perform comprehensive performance testing
- Replace aging components such as springs and seals
Long-term Storage
- If not used for a long period, clean the interior and exterior of the valve
- Apply anti-rust agent to protect metal components
- Store in a dry, well-ventilated environment
- Regularly check the storage condition to prevent moisture and corrosion
6. Precautions
- Do not use the valve exceeding the maximum proof pressure
- Avoid installing the valve in corrosive environments unless special protective measures are taken
- Do not use the valve with media other than compressed air unless specifically stated
- Before performing maintenance, always shut off the air supply and release system pressure
- Regularly check the working status of the valve to detect and resolve issues promptly
- If any abnormal conditions are found, stop use immediately and inspect
- When replacing parts, use genuine WENK Pneumatic accessories to ensure product performance and safety
Our Commitments & Core Advantages
1. We are a factory specializing in the production of pneumatic components, with mature manufacturing experience and technology.
2. We manufacture and supply a wide range of series and specifications of air cylinders and pneumatic components, providing you with flexible options.
3. We can undertake the customization business of various pneumatic components according to the specific needs of customers.
We adhere to the service concept of efficiency and thoughtfulness, making you feel comfortable throughout the cooperation process, just as smooth as cooperating with a close friend.