How to Use 24V Irrigation Valve: Examples, Pinouts, and Specs

The Hunter PGV 101g is a 24V solenoid-operated irrigation valve designed for residential and light commercial use in controlling the flow of water in irrigation systems. This valve is widely used in automated sprinkler systems, drip irrigation setups, and can be integrated into smart home automation for scheduled watering.

• Residential lawn and garden irrigation
• Commercial landscaping
• Agricultural irrigation
• Greenhouse water management systems

• Operating Voltage: 24V AC (50/60 Hz)
• Inrush Current: 0.30 A (approx.)
• Holding Current: 0.19 A (approx.)
• Pressure Range: 20 to 150 PSI
• Flow Rate: 0.2 to 40 GPM
• Temperature Range: Up to 150°F (for water), Ambient up to 125°F

1. Power Supply Connection: Connect the solenoid leads to a 24V AC power supply. Ensure that the power supply matches the valve's voltage requirements.
2. Control Interface: To control the valve with an electronic system such as an Arduino, use a relay or a transistor circuit capable of handling the inrush current.
3. Water Connection: Connect the inlet and outlet ports to your irrigation system's piping, ensuring proper sealing to prevent leaks.

• Always install the valve with the solenoid upright.
• Use a filter upstream of the valve to prevent debris from affecting valve operation.
• Ensure that the electrical connections are waterproof and safe for outdoor use.
• Test the valve manually using the solenoid's manual override before automating it.
• Use a snubber circuit if you observe voltage spikes that could damage the control electronics.

// Example code to control a Hunter PGV 101g valve using an Arduino UNO and a relay module

const int relayPin = 2; // Relay control connected to digital pin 2

void setup() {
  pinMode(relayPin, OUTPUT); // Set relay pin as an output
  digitalWrite(relayPin, LOW); // Start with the valve closed
}

void loop() {
  digitalWrite(relayPin, HIGH); // Open the valve
  delay(10000); // Keep the valve open for 10 seconds
  digitalWrite(relayPin, LOW); // Close the valve
  delay(20000); // Keep the valve closed for 20 seconds
}

Note: The above code assumes the use of a normally open relay module that activates the valve when the relay is energized.

• Valve Does Not Open: Check the power supply and wiring connections. Ensure the relay module is functioning correctly.
• Valve Leaks: Verify that the connections to the piping are secure and that there are no cracks in the valve body.
• Valve Does Not Close Completely: Inspect for debris inside the valve or issues with the solenoid.

• If the valve does not operate, ensure that the manual override works to rule out mechanical issues.
• For electrical issues, use a multimeter to check for the presence of the 24V AC across the solenoid leads when activated.
• Regular maintenance, including cleaning the valve and checking for wear and tear, can prevent many common issues.

FAQs:

• Q: Can I use a DC power supply with this valve?

  • A: No, the Hunter PGV 101g is designed for a 24V AC power supply.

• Q: How can I integrate this valve into a smart home system?

  • A: Use a smart relay module compatible with your smart home platform to control the valve.

• Q: What is the warranty period for the Hunter PGV 101g valve?

  • A: Please refer to Hunter's official documentation or contact their support for warranty information.

For further assistance, contact Hunter's customer support or refer to the official PGV 101g manual.