1. What is an LP Gas Pipe Sizing Calculator?

Definition: This calculator determines the minimum pipe diameter required for liquefied petroleum (LP) gas systems based on BTU load and pipe length.

Purpose: It helps ensure proper gas flow and pressure in propane or butane systems for safe and efficient operation.

2. How Does the Calculator Work?

The calculator uses industry-standard sizing charts based on:

Where:

• \( BTU \) — Total British Thermal Units per hour load
• \( Length \) — Total equivalent pipe length (feet)

Explanation: The calculator references pressure drop tables to determine the smallest pipe diameter that can deliver the required BTU load over the specified distance.

3. Importance of Proper Pipe Sizing

Details: Correct pipe sizing prevents pressure drops, ensures appliance performance, and maintains safety by preventing gas starvation or excessive pressure.

4. Using the Calculator

Tips: Enter the total BTU load of all connected appliances and the total pipe run length (including equivalent length for fittings).

5. Frequently Asked Questions (FAQ)

Q1: What's included in pipe length?
A: Include the actual pipe length plus equivalent lengths for fittings (elbows, tees, valves) per sizing charts.

Q2: What pressure does this calculator assume?
A: This is based on standard 11" WC (water column) pressure drop for residential systems.

Q3: How do I find the BTU load?
A: Sum the BTU ratings of all connected appliances (found on their data plates).

Q4: When would I need to upsize the pipe?
A: For very long runs, multiple appliances, or if future expansion is planned.

Q5: Does this work for natural gas?
A: No, natural gas requires different sizing calculations due to different energy content and pressure characteristics.