6. How do you test the “ant-milking valve” in a fuel dispensing pump, and what limit of error is allowed?

To test the "ant-milking valve" in a fuel dispensing pump, you can follow these steps:

1. Ensure the pump is turned off and disconnected from the power source.
2. Remove the cover of the pump to access the valve.
3. Inspect the valve for any signs of damage or wear.
4. Use a pressure gauge to test the valve by applying pressure to it and checking for any leaks or malfunctions.
5. Check the valve's ability to open and close properly by manually operating it.
6. Test the valve with a flow meter to ensure it is allowing the correct amount of fuel to pass through.

The limit of error allowed for the "ant-milking valve" in a fuel dispensing pump will depend on industry standards and regulations. It is important to consult the manufacturer's guidelines and any applicable regulations to determine the acceptable limit of error for the valve. Typically, the limit of error for fuel dispensing equipment is around +/- 0.5% to +/- 1% of the total volume dispensed.