What does the first stage of a two-stage propane regulator typically reduce system pressure to?

The first stage of a two-stage propane regulator typically reduces system pressure to about 10 PSI. This is crucial because the primary role of the first stage regulator is to take the high-pressure liquid propane coming from the storage tank and reduce it to a more manageable pressure level that is safe for further regulation.

Once the pressure is reduced to around 10 PSI, the second stage regulator can then further reduce this pressure to the level needed for appliances, usually around 11 inches of water column (which is equivalent to approximately 0.4 PSI), ensuring that the gas is delivered safely and effectively to the end use points such as stoves and heaters.

Understanding this process is essential for technicians, as it directly impacts system performance and safety.