How to Use AirValve: Examples, Pinouts, and Specs

The 12V AirValve is an electronic device designed to control the flow of air in a system. It is commonly used in pneumatic applications to regulate pressure and airflow. This component is ideal for systems requiring precise air control, such as automation equipment, HVAC systems, and laboratory instruments. Its compact design and 12V operation make it suitable for integration into a wide range of projects.

• Pneumatic systems for industrial automation
• Airflow regulation in HVAC systems
• Laboratory equipment requiring controlled air pressure
• DIY projects involving air pumps or compressors
• Robotics and mechatronics systems

The following table outlines the key technical details of the 12V AirValve:

The 12V AirValve typically has two electrical connections for operation. The pin configuration is as follows:

1. Power Supply: Connect the positive terminal (+) of the AirValve to a 12V DC power source. Connect the negative terminal (-) to the ground (GND).
2. Control Signal: Use a relay, transistor, or MOSFET to control the AirValve if it needs to be switched on/off by a microcontroller or other logic circuit.
3. Airflow Connection: Attach the air input and output to the respective ports using 1/8" NPT fittings. Ensure the connections are airtight to prevent leaks.
4. Testing: Apply 12V to the AirValve and verify that it opens and closes properly, allowing or blocking airflow as required.

• Voltage Compatibility: Ensure the power supply provides a stable 12V DC. Overvoltage can damage the AirValve.
• Current Handling: If controlling the AirValve with a microcontroller, use a relay or transistor to handle the 200 mA current draw.
• Air Pressure: Do not exceed the maximum pressure rating of 100 PSI to avoid damaging the valve.
• Orientation: Install the AirValve in the correct orientation as indicated by the airflow direction markings on the body.

Below is an example of how to control the 12V AirValve using an Arduino UNO and a relay module:

// Example code to control a 12V AirValve using an Arduino UNO
// and a relay module. Ensure the relay module is rated for 12V operation.

const int relayPin = 7; // Pin connected to the relay module

void setup() {
  pinMode(relayPin, OUTPUT); // Set the relay pin as an output
  digitalWrite(relayPin, LOW); // Ensure the relay is off initially
}

void loop() {
  // Turn the AirValve ON
  digitalWrite(relayPin, HIGH); // Activate the relay
  delay(5000); // Keep the valve open for 5 seconds

  // Turn the AirValve OFF
  digitalWrite(relayPin, LOW); // Deactivate the relay
  delay(5000); // Keep the valve closed for 5 seconds
}

• Use a flyback diode across the relay coil to protect the circuit from voltage spikes.
• Ensure the relay module is capable of handling the 12V AirValve's current requirements.

1. AirValve Not Activating

   • Cause: Insufficient voltage or current.
   • Solution: Verify the power supply provides 12V DC and at least 200 mA.

2. Air Leaks

   • Cause: Loose or improperly sealed connections.
   • Solution: Check all fittings and ensure they are tightened securely. Use Teflon tape if necessary.

3. Valve Stuck in Open or Closed Position

   • Cause: Debris or mechanical failure.
   • Solution: Inspect the valve for blockages and clean it if necessary. If the issue persists, consider replacing the valve.

4. Microcontroller Not Controlling the Valve

   • Cause: Incorrect wiring or insufficient current handling.
   • Solution: Verify the relay or transistor is correctly connected and rated for the AirValve's current.

Q: Can I use a 9V battery to power the AirValve?
A: No, the AirValve requires a stable 12V DC supply. A 9V battery will not provide sufficient voltage for proper operation.

Q: Is the AirValve suitable for liquid flow control?
A: No, the AirValve is designed specifically for air and should not be used with liquids.

Q: Can I control the AirValve directly with an Arduino pin?
A: No, the Arduino pin cannot supply the required current. Use a relay, transistor, or MOSFET to control the AirValve.

Q: What is the expected lifespan of the AirValve?
A: The lifespan depends on usage conditions but is typically rated for millions of cycles under normal operating conditions.