When it comes to natural gas fittings, there are primarily two types that are commonly used in the United States. These are the NPT (National Pipe Thread) fittings and the “Flared” fittings. It’s important to note that the type of fitting you use has nothing to do with whether your fire pit uses propane or natural gas, but rather it is determined by the gas supply line or appliance.
Let’s first discuss NPT fittings. These fittings are widely used in the plumbing industry and are designed to create a tight seal between two pipes or fittings. NPT fittings have tapered threads that allow them to screw into a corresponding female NPT connection. They are typically made of brass or steel and are known for their durability and reliability.
On the other hand, we have “Flared” fittings. These fittings are commonly used in gas applications where a tight seal is required. Flared fittings consist of a male fitting with a flared end and a female fitting with a cone-shaped seat. When the male and female fittings are connected, the flared end of the male fitting is pressed against the cone-shaped seat of the female fitting, creating a seal. Flared fittings are typically made of brass and are commonly used in gas appliances such as stoves, water heaters, and furnaces.
It’s worth mentioning that both NPT and flared fittings may contain trace amounts of lead. This is because lead has historically been used in the manufacturing of brass fittings. However, it’s important to note that the amount of lead in modern fittings is minimal and is regulated by various standards and regulations to ensure safe usage.
When choosing the type of fitting for your natural gas supply line or appliance, it’s crucial to consider the specific requirements of your setup. Factors such as the size of the gas line, the pressure rating, and the compatibility with other components should all be taken into account. If you’re unsure about which fitting to use, it’s recommended to consult a professional plumber or gas technician who can provide guidance based on your specific needs.
When it comes to natural gas fittings, the two standard types used in the U.S. are NPT and flared fittings. The choice between these fittings depends on the requirements of your gas supply line or appliance. It’s essential to consider factors such as size, pressure rating, and compatibility, and consult a professional if you’re unsure. Remember, both NPT and flared fittings may contain trace amounts of lead, but modern fittings are regulated to ensure safety.