Before you begin, make sure your grill model supports natural gas conversion. The Monument Grill natural gas conversion kit is made to convert compatible Monument Grills from propane to a natural gas supply, including select dual gas valve grill models. This guide is for Monument grill owners who want a more convenient, economical fuel setup at home, and it walks through model compatibility, the parts and tools you need, step-by-step installation, and the final safety checks, including leak testing. This kit is compatible with the following Monument Grills models:
What You’ll Need
- NG hose
- NG regulator
- Slot screwdriver (flat-blade)
- Orifice sockets
- NG side burner orifice
This product includes the accessories and hardware needed to complete a dual gas valve grill setup on the following Monument Grills models. The kit also comes with the hardware and tools, plus the tools, for installation.
Tip: Always work in a well-ventilated outdoor space and keep safety gloves handy. You can buy the conversion kit here.
Step-by-Step Conversion
This complete kit includes all necessary hardware for installation, plus the accessories and tools needed to easily convert select Monument models from propane to natural gas for a continuous natural gas supply from your home. For Monument Grills natural gas setups, note that grills natural gas conversion works best when each part is installed in the order shown below.
Step 1: Remove the LP fuel tank➡ Make sure the tank valve is fully closed before disconnecting. Always handle the tank outdoors and keep it upright.
Step 2: Use a 6mm wrench to remove the LP regulator
➡ Double-check that there's no gas pressure left in the line before loosening.
Step 3: Install the NG regulator
➡ Ensure the regulator is tightened securely to prevent leaks.
Step 4: Pass the NG hose through the grill cart➡ The kit includes a 10 ft 1/2" ID natural gas hose. Keep the hose away from sharp edges or hot surfaces to avoid damage.
Step 5: Connect the NG hose to the NG regulator
➡ Hand-tighten first, then use a wrench carefully. Do not overtighten.
Step 6: Connect the NG hose to the rigid natural gas supply pipe
➡ Always use approved pipe sealant or tape rated for gas connections. Test connections later with a soapy water solution to check for leaks.
Step 7: Push back the clamp spring
➡ Hold it firmly to prevent it from snapping back during removal.
Step 8: Remove the burner
➡ Gently lift it out to avoid bending the burner tube.
Step 9: Use orifice sockets and slot screwdriver to remove brass orifice from the end of gas valve➡ Remove the propane fitting carefully and replace only the parts specified for conversion. Keep the removed LP orifice in a safe place in case you ever convert back.
Step 10: You don't need to install NG orifice — it's already in place
➡ Just confirm it's seated properly before moving on.
Step 11: Reinsert the burner
➡ Align the burner tube correctly with the gas valve opening.
Step 12: Reattach using the clamp spring previously removed
➡ Make sure the spring locks the burner securely in place.
Step 13: Remove the LP side burner orifice
➡ Work carefully here, as the side burner fittings are smaller and more delicate.
Step 14: Install the NG side burner orifice
➡ Tighten snugly, but do not force it.
Step 15: Remove all the control knobs (firmly pull off)
➡ Grip straight and pull outward — avoid twisting to protect the valve stems.
Step 16: Use flat-blade screwdriver to turn the high-flame setscrew clockwise about 90°
➡ This reduces the flame for natural gas use. Do not over-adjust — 90° is usually enough.
Step 17: Reattach the control knobs and turn off the burner
➡ Once installed, test all burners. Turn them on briefly, check flame color (blue with slight yellow tips is ideal), then turn them off.
Final Safety Check:
- After conversion, always perform a leak test with soapy water on all connections.
- If you see bubbles forming, shut off the gas immediately and retighten.
- If unsure, contact a technician to review your installation.
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Related natural gas grill resources
Before or after conversion, these Monument Grills links help confirm compatibility, setup, safety, and replacement parts:
- Natural Gas Conversion Kit
- Natural Gas Conversion Kit Collection
- Natural Gas Grill
- Eminence 605
- 41847NG Stainless Natural/Propane Gas Grill
- Denali 605
- 77352 Stainless Propane Gas Grill
- Gas Grills
- Gas Grills Parts
- Outdoor Grill Replacement Parts
- Assembly Manuals and Videos
- Warranty and Replacement Parts
- Support
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Monument Grills FAQs
- Use site search tools to find the right items before you order or complete a purchase for your grill or related appliance.
- Check delivery, return, and after-sales support details through Monument Grills resources if you need help before or after buying.
- How to Perform a Gas Leak Test on Your Grill
- Installing Your Monument Gas Grill
- Troubleshooting Your Grill
- How to Clean Your Monument Grill
- Eminence Series Grill Maintenance Guide
- Monument Grills Comparison
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Gas appliance conversion must comply with local plumbing and fuel gas codes.
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