How to Convert a Gas Appliance Regulator from LP to Natural Gas
or from Natural Gas to Propane
CONVERT the GAS REGULATOR - CONTENTS: How to change an LP or natural gas appliance regulator over from liquid petroleum gas (LP or bottled gas) to natural (piped-in) gas for gas fired appliances in a building.
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LP to Natural Gas appliance regulator conversions between Natural Gas& o LP fuel gas:
This article describes a typical procedure for changing a gas appliance regulator from natural gas input to LP gas (propane) input. Setting the gas pressure regulator to the proper fuel is a required step in converting a gas appliance from one fuel to another and must be performed for safe, proper operation.
Advice & procedures for changing from LP gas to Natural gas in a building. Advice for converting between Natural gas and LP gas in a building.
This article series explains the procedure for converting from LP gas or "bottled gas" to natural gas or "piped in gas" at a building.
LP Gas <-> Natural Gas Appliance Regulator Conversion - Example
Here are examples of how gas range and oven components may be converted between natural gas and LP Gas. Below we illustrate removing the cap from the gas regulator for a Bosch gas cooktop in the NGM80 series. At below right the cap has been removed by unscrewing it from the regulator body. Close-up photos follow.
Watch out: Most manufacturers require that installation and fuel conversions shall be performed by a trained and qualified service technician. The technician should be sure to correctly identify the model number of your gas appliance so that s/he can follow the correct details of the manufacturer's instructions.
Typically the conversion between fuels requires simply the rotation, inversion, or adjustment of parts already present on the gas appliance.
[Click to enlarge any image]
Rotating Type Gas Regulator Adjustment to Convert Between Natural Gas & LP or Propane Gas
From left to right in the sketch below: an oven burner control internal part is rotated to convert between LP or Natural gas. At second from left the stove top gas burner air shutter position is adjusted. At below right, a component inside the gas regulator is inverted.
Watch out: The sketches above, adapted from a U.S. made gas range and oven are given only for purposes of general example. Be sure to follow the manufacturer's recommendations for converting your appliance between LP gas and Natural Gas. Improper adjustment or modification of gas fired appliances can be dangerous and may result in fire or even death from gas leaks.
Below we will show how a different type of gas regulator cap is converted between fuels not by rotating a part but by pulling off and flipping it over.
How to Adjust the Gas Pressure Regulator to Convert between LP Gas and Natural Gas by Turning over the Plastic Plug Inside the Cap
Below we illustrate these steps in photographs for the Bosch gas cooktop. The cooktop is delivered from the factory set up to be connected to natural gas. We show the conversion of the cooktop from natural gas TO LP or propane gas. [Click to enlarge any image]
At above left you see the gas regulator cap with the plastic plug in position to use natural gas.
This is the gas regulator cap as it was removed from the regulator. You need to examine it with more care to see how it has been set up. We see that the letters "NAT" are shown upside down if the cap is held with its outer surface "down". This is the "natural gas" position as the regulator is delivered from the factory.
At above right we've removed the green plastic plug by gently wiggling it side to side and pulling it off of the cap.
At above left you see the gas regulator cap with the plastic plug flipped "over" 180 degrees and pushed back into the cap in the proper position to use LP gas: the letters "LP" are upside down and the larger diameter disc is visible.
At above right we have reassembled the regulator cap back onto the regulator, taking care not to strip the threads of the aluminum parts.
The cap should be tightened snugly but don't use too much force or you may damage it. We marked this regulator as "LP" to indicate that it's ready for use in connection to a LPG or propane gas supply.
or on some models
Here is an example of a convertible gas range pressure regulator.
[Click any of these images for a larger, more detailed version.]
Using simple tools the pressure regulator cap is removed, flipped over, and reinstalled.
Gas pressure regulators used in several home appliances may be similar, but as we warn above, be sure to find and obtain the precise instructions from the manufacturer of your own appliance brand, model, and serial number in order to be safe.
Continue reading at CONVERT the GAS ORIFICES or select a topic from closely-related articles below, or see our complete INDEX to RELATED ARTICLES below.
GAS COOKTOP INSTALLATION into a countertop - separate article series describes piping connections, electrical connections, countertop preparation, countertop opening & clearances, testing for gas leaks, securing the cooktop to the countertop & final inspection & tests.
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Questions & answers or comments about gas fuel conversions: LP or "bottled gas" to piped-in natural gas service.
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Bosch, "Gas Cooktops Installation Manual, NGM Gas Cooktops (NGM30, NGM50, NGM 56, NGM80, NGM86, NGMP65)", (2013), Bosch, 1901 Main St., Suite 600, Irvine CA 92614, Tel: 800-944-2904, Website: www.bosch-home.com
Bosch, "LP Gas Conversion Kit Installation Manual , NGM Gas Cooktops (NGM30, NGM50, NGM 56, NGM80, NGM86, NGMP65)", (2014), Bosch, 1901 Main St., Suite 600, Irvine CA 92614, Tel: 800-944-2904, Website: www.bosch-home.com
Bosch, "Gas Cooktops Use and Care Manual, NGM5055, NGM8055, NGM8065, NGMPO55, NGM5655, NGM8655, NGM8665, NGMP655", (11/13), Bosch, 1901 Main St., Suite 600, Irvine CA 92614, Tel: 800-944-2904, Website: www.bosch-home.com
Venera Brinzea, Maria Mitu, Codina Movileanu, Adina Musuc and Domnina Razus, "Expansion Coefficients And Normal Burning Velocities Of Propane-air Mixtures By The Closed Vessel Technique", University of Bucharrest, (2010), Analele Universatati Bucuresti, Department of Physical Chemistry
4-12 Regina Elisabeta Blvd, District 3, Bucharest
phone: +40'21'3143508; fax: +40-21-3159249
ISSN: 1844-0401, ARS DOCENDI PUBLISHING HOUSE
Sos. Panduri 90, District 5 Bucharest
PropaneCarbs.com, "Tri Fuel Natural Gas & Propane Conversion Kits, More Information About Conversion Kits ... for Generators, Welders, Concrete Sws, Floor Cleaners, Man Lifts", Tel: 1-877-425-8383, Email: firstname.lastname@example.org, Website: http://www.propanecarbs.com, retrieed 4/28/14, original source: http://www.propanecarbs.com/tri_fuel_kits.html
Propane101.com, "Converting Gas Appliances", Email: email@example.com, website: http://www.propane101.com, retrieved 4/28/2014, original source: http://www.propane101.com/lpgasapplianceconversions.htm
Notice: as of the retrieval date, and regarding authority, the "Propane 101" website does not name authors, provides no contact information, no address.
Rheem Corporation, "Conversion Instructions, Natural Gas to LP Gas", FaxBack 1506 These fuel conversion instructions are limited to Manufactured Housing products only. Retrived 4/28/14, original source: http://www.rheem.com/docs /FetchDocument.aspx?ID=1c3868ba-1cdc-4e3f-8aec-b7c7a4a1d137
U.S. Energy Information Administration - eia.doe.gov/
U.S. Environmental Protection Agency - epa.gov/solar/energy-and-you/affect/natural-gas.html
At Natural Gas.Org www.naturalgas.org/environment/naturalgas.asp#emission you’ll find a table of combustion products
At geocities.com/rainforest/6847/report1.html is an interesting and detailed though not “neutral” report on the components and contaminants in the combustion of natural gas. You’ll see a long long list of emissions products, but look again – most of the contaminant levels listed are in the picograms.
apvgn.pt/documentacao/iangv_rep_part1.pdf lists the components in natural gas exhaust from vehicles
The Need Project, Manassas, VA: need.org/needpdf/infobook_activities/SecInfo/NGasS.pdf
Kroschwitz, Jacqueline I., and Mary Howe-Grant (eds.). "Gas, Natural." In Encyclopedia of Chemical Technology. 4th ed., vol. 12. New York: John Wiley and Sons, Inc., 1993.
Tussing, Arlon R., & Bob Tippee. The Natural Gas Industry: Evolution, Structure, and Economics. 2nd ed. Tulsa, OK: PennWell Publishing, 1995.
Thanks to reader E Leal for suggesting the addition of details about how to convert gas burning appliances from propane to natural gas or from natural gas to propane. 8/4/09
Thanks to reader JR for discussing LP and natural gas operating pressures and leak detection safety, October 2010.
Glenwood Range Company, Customer Service, 435 Park Ave., Delaware OH 43105, 614-363-1381, Glenwood-Sunray Service Center: 215-682-4211.
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