What is the permissible pressure drop between the meter and the appliance?

The permissible pressure drop between the meter and the appliance is 0.50 inches water column (wc). This standard ensures adequate gas delivery pressure to the appliance for optimal operation. If the pressure drop exceeds this limit, it could lead to insufficient gas supply, affecting appliance performance and efficiency.

Maintaining a pressure drop within this range is crucial for safety and functionality. It ensures that all connected appliances receive the necessary gas pressure to operate effectively. Too low a pressure could result in appliances not igniting or operating improperly, while too high a drop might indicate issues such as blockages or improper sizing of gas lines.

Understanding this standard is vital for anyone involved in gas appliance installation, maintenance, and troubleshooting, as it helps to ensure compliance with regulatory standards and safe operation.