What is the Orifice Size for a Natural Gas Grill?

The orifice size for a natural gas grill is typically larger than the orifice size for a propane grill. This is because natural gas has a lower pressure than propane, so a larger orifice is needed to allow the same amount of gas to flow through.

The orifice size is typically stamped on the side of the orifice fitting. The orifice size is a number, and the larger the number, the smaller the orifice. For example, a #48 orifice is smaller than a #46 orifice.

The correct orifice size for your grill will depend on the make and model of your grill, as well as the type of gas you are using. It is important to use the correct orifice size for your grill, as using the wrong size can lead to safety hazards or poor performance.

If you are unsure of the correct orifice size for your grill, you can consult your grill’s owner’s manual or contact the manufacturer.

How to Convert a Propane Grill to Natural Gas

Converting a propane grill to natural gas is a relatively simple process, but it is important to follow the manufacturer’s instructions carefully.

The first step is to purchase a natural gas conversion kit. This kit will include a new orifice fitting, a new regulator, and a new hose.

Once you have the conversion kit, you will need to remove the propane tank from your grill. Then, you will need to disconnect the propane hose from the grill and the regulator.

Next, you will need to install the new natural gas regulator and hose. The regulator should be installed on the grill’s gas inlet, and the hose should be connected to the regulator and the new orifice fitting.

Finally, you will need to install the new orifice fitting. The orifice fitting should be installed on the gas valve.

Once you have installed the new orifice fitting, you will need to leak test the grill. To do this, you will need to turn on the gas supply and check for leaks. If you find any leaks, you will need to tighten the fittings until the leaks are stopped.

Safety Precautions

When working with natural gas, it is important to take safety precautions. These precautions include:

  • Never smoke or use open flames near natural gas.
  • Always turn off the gas supply before working on your grill.
  • Use a leak detector to check for leaks before using your grill.
  • Keep your grill away from children and pets.

Converting a propane grill to natural gas is a relatively simple process, but it is important to follow the manufacturer’s instructions carefully. By following these instructions, you can safely convert your grill and enjoy the benefits of natural gas.

What is an orifice? Depending on the application, an orifice in a gas grill regulates the flow of gas, which can be either natural gas or LP gas (propane). The hood orifice is a female fitting that screws into the male valve end of the valve, whereas the spud orifice is a male fitting that screws into the valve. An aperture is necessary for the operation of a gas grill. What Does Orifice Size Mean? The nozzle’s aperture size determines your machine’s operating pressure. Generally speaking, the machine’s ability to flow water is restricted more when the orifice is smaller. Selecting a nozzle with an aperture that is too small could impede the flow of water and make the machine work harder than it is intended to. Functions of Orifice The grill’s BTU (British Thermal Unit) rating and the type of gas it runs on are determined by the size of the orifice hole. The BTU rating of your grill burner determines how much heat it emits. Unlike liquids and solids, gaseous substances can’t be mixed. This means that because propane has a higher pressure than natural gas, its orifices will be narrower and the openings for natural gas will be larger. Neither of them can be used in the same way. Never use propane on natural gas or natural gas on propane through an aperture that was drilled for natural gas. It is extremely dangerous to use a Natural Gas orifice on a Propane grill as this can produce an abnormally high flame. Importance of Orifice Meter Use in Natural Gas Measurement of the Natural Gas’s Volumetric Flow is the Principal Use of Orifice Meters in Natural Gas Not only that, but the following is a list of the most prevalent benefits: Orifice meters offer precise flowrate measurements. These meters are an excellent investment because they are easy to use and require little upkeep. They use readily available devices to measure differential pressures in order to meet the design requirements. Standards for sizing orifices have been developed by the International Organization for Standardization (ISO), the American Gas Association (AGA), and the American Petroleum Institute (API). Orifice plate meters are used in many different situations and flow ranges, usually in challenging conditions. The meter can be operated over wide flow ranges for prolonged periods of time thanks to changeable orifice plates, regardless of how much the flow is reduced or surges to exceed the meter’s maximum flow rate standard. Digital, networking, and industrial internet of things (IIoT) technologies enable orifice meters to better address contemporary measurement challenges. Because orifice meters are integrated with plants, flow data they provide can now be shared and used in other domains. Despite its simplicity, the orifice meter may have one of the most comprehensive and user-friendly diagnostic suites of any flowmeter. A natural gas orifice is necessary for the operation of a gas grill. Do You Need One for Your Application? The grill’s BTU rating and the type of gas it uses are determined by the size of the orifice hole. Natural gas has larger orifices because of its lower pressure, whereas propane is a compressed gas, so its orifices are smaller. There’s no interchangeability between the two. FAQs What is the best method to measure the size of my orifice? You can calculate the orifice’s square foot size by dividing the liquid’s flow by its velocity. Using the preceding example as a guide, divide 8 by 2. Four square feet would be the total surface area of the orifice. What does a natural gas orifice do? A gas orifice is a tiny, extremely accurate hole that allows fuel to enter the combustion or burner tube. Fuel cannot be supplied to the appliance in time for sufficient combustion to occur if the fuel supply aperture is clogged or dirty. What is the minimum size of orifice needed for natural gas? Pilot orifices for natural gas typically have a range of sizes, from roughly 0 014 to 0. 026 inches (inches diameter). For example, 0. 026′′ at 4′′ pressure for a commercial cooking appliance pilot (1,835 Btu/hr) and 0 018′′ and 879 Btu/hr at 4′′ pressure for a natural gas water heater pilot are both suitable values. Because the gas service pressure for natural gas is higher than that of propane, the orifices for natural gas have a larger diameter than those for propane. Using a propane device with natural gas would probably result in a tiny flame or perhaps no burner flame because of the lower pressure gas and the narrower orifice. Conclusion: It appears that there are a lot of uses for different orifice sizes. Select a size that allows you to have total control over the project. With the aid of the accompanying chart, you’ll learn how the proper size selection may make your life easier and enhance your work experience. Hopefully, this Natural Gas Orifice Size Chart will help you in your journey!



What size hole is a natural gas orifice?

Decimal Equivalent
Natural Gas

Does natural gas have a bigger orifice than propane?

In other words, connecting a natural gas appliance to a propane piping system will result in appliance malfunction and possibly danger. The reason for this is because natural gas orifices are larger than propane orifices strictly because of gas service pressure.

What size orifice for a natural gas grill?

There are a few factors to consider when determining the right size orifice for your natural gas grill. The first thing to consider is the size of the burner. Larger burners will require a larger orifice to allow for the proper flow of gas, while smaller burners will require a smaller orifice.

What is a grill orifice?

An orifice is a small hole located in the gas valve or burner that controls the flow of gas. It is the component that determines the size of the flame produced by the grill. The size of the orifice directly affects the amount of gas that can flow through it, which in turn affects the heat output of the grill.

How do you know if a natural gas grill orifice is right?

One way to determine if the orifice on your natural gas grill is the right size is to check the flame. If the flame is burning unevenly or is yellow instead of blue, it could be a sign that the orifice is the wrong size. 3. What are the dangers of using the wrong size orifice on a natural gas grill?

Does a propane grill need a small orifice?

Propane gas grills typically require smaller orifices compared to natural gas grills. This is because propane has a higher energy content per unit volume compared to natural gas. In other words, propane contains more heat energy per cubic foot than natural gas.

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