PSI, or pounds per square inch, measures gas pressure and directly influences the BTU output of your fire pit. The higher the PSI, the greater the gas flow and BTU output, which in turn affects the size and intensity of the flame.
Typical PSI Levels:
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Low-Pressure Systems (Natural Gas):
Most residential natural gas setups run at around 0.25 PSI (or 7 inches of water column). This is sufficient for most fire pits and fireplaces, as natural gas systems are typically designed for low-pressure use. -
Medium-Pressure Systems (Propane):
For propane systems, especially those using a built-in propane line, the gas pressure may be around 0.5 PSI. This is common for propane setups and offers a balance of fuel efficiency and flame size. -
High-Pressure Systems:
Some fire features may require higher gas pressures, such as 2 PSI or more. Higher PSI systems are usually used in larger fire pits or features that require a higher BTU output. If your setup uses 2 PSI, you'll need a smaller gas orifice to safely reduce gas flow.
Choosing the Correct PSI for Your Setup:
- Natural Gas: For most residential natural gas fire pits, 0.25 PSI is standard. This works well for typical outdoor fire pits.
- Propane: Propane systems usually require 0.5 PSI, but this can vary depending on the size of the fire pit and the burner.
- High BTU Output: If you’re looking for a larger flame or using a commercial-grade fire pit, you may need a system that runs at 2 PSI or higher. These systems require special attention to ensure the correct gas orifices are used to manage gas flow safely.
Safety and Professional Guidance:
To ensure your fire pit operates safely and efficiently, it’s crucial to determine the correct gas pressure (PSI) for your specific setup. Improper PSI levels can affect performance or even create safety hazards. If you're unsure of your fire pit's PSI requirements, we highly recommend consulting a local professional installer who can assess your system and configure the right setup.