Introduction
Installing a natural gas line for an outdoor grill allows you to fuel your grill with convenient, clean-burning natural gas instead of propane tanks. Running a gas line yourself can save money compared to hiring a professional, and it is not extremely difficult with proper planning and precautions.
This article will provide a step-by-step guide to running a natural gas line for your outdoor grill, from planning and materials to trenching, assembling, and connecting the line. We will also cover safety tips, code requirements, and inspection. With the right materials and safety measures, you can have a gas-powered barbecue ready for summer cookouts.
Planning the Natural Gas Line Route
Proper planning is crucial when installing a gas line for your outdoor grill. Here are some key steps:
Determine the Grill Location
Consider visibility, access to the house, wind direction, and distance from property lines when deciding where to place your grill. Account for the gas line length when determining the optimal grill location.
Map the Gas Line Route
Map out the underground route from the grill to the gas source. The most direct path saves piping. Bury the line at least 18 inches deep and avoid areas prone to digging.
Measure the Gas Line Length
Measure the trench length to determine the materials needed. Consider extra piping to provide slack. The gas line can be no longer than 50 feet per local code.
Obtain Necessary Permits
Check local regulations and acquire gas plumbing permits prior to installation. Some areas require inspections.
Acquiring the Right Materials
You will need piping, connectors, valves, and other accessories to run the gas line:
- Piping – Use black iron or polyethylene gas pipeline rated for outdoor use. Size it for sufficient BTU capacity.
- Shutoff valve – Choose an exterior grade valve to connect the gas source to the line.
- Flare fittings – Flared fittings join the pipe sections. Avoid galvanized fittings as they can corrode.
- Pipe coating – Coat exposed piping with exterior enamel. Bury piping must be corrosion-resistant.
- Other materials – Teflon tape, pipe clamps, screw post, and wire. A sediment trap is recommended.
Consult local codes for approved materials. Improper materials risk gas leaks and explosions.
Trenching for the Gas Line
Burying the gas line protects it and meets code requirements:
Outline the Trench Path
Mark the route with spray paint or flour. Avoid utility lines when digging.
Dig the Trench
Use a spade for smaller projects. For longer runs, a trencher rental is faster. Dig at least 18 inches down.
Inspect the Trench
Ensure no sharp rocks or debris will damage the pipe when buried. Smooth the bottom.
Backfill and Compact
Refill the trench in 6 inch layers, compacting the soil after each layer.
Assembling the Natural Gas Line
Follow these steps to assemble the piping with proper fittings:
Cut the Black Iron Piping
Measure and cut the piping to length using a pipe cutter. Ream cut ends to ensure smooth edges.
Attach the Fittings and Valve
Use flare fittings to connect pipe sections. Apply teflon tape to threads to prevent leaks. Install the shutoff valve.
Coat Exposed Piping
Paint outdoor exposed piping with exterior enamel to prevent rusting. Leave burried portions bare.
Perform Leak Checks
Test for leaks on all connections and valve by brushing with soap solution. Fix any leaks found.
Run Line Through Trench
Carefully layout assembled piping in the trench. Leave some slack to prevent stress on joints.
Connecting the Gas Line to the Grill
Complete the gas line with safe appliance hookups:
Anchor the Gas Line
Secure piping at its origin and termination points. Bury the remainder. Backfill the trench.
Install Sediment Trap
A sediment trap catches debris and prevents clogs. Install vertically near the grill location.
Connect to Grill Regulator
Attach piping to grill regulator or quick connect kit designed for gas grills.
Perform Final Leak Checks
Test the completed gas line again for leaks before use. Spray with soap solution.
Consider Extending to Other Appliances
If code allows, plan for a ‘T’ connector to enable extending to other appliances in the future.
Safety Tips for Gas Line Installation
Gas line safety is extremely important. Keep these tips in mind:
- Turn off the gas supply at the source while working
- Do not use galvanized fittings or improper pipe
- Conduct leak tests on all connections
- Counter-tighten flare fittings properly to avoid leaks
- Install pipe supports every 4-6 feet for stability
- Bury line at least 18 inches below ground
- Clear dirt and debris from piping before assembly
- Ensure grill shutoff is easily accessible for emergencies
- Hire a professional if overwhelmed by the process
Having the Gas Line Inspected
Check your local building codes to determine if an inspection is required before using your newly installed gas line. Qualified inspectors will check for:
- Approved piping and fittings
- Piping buried at proper depth
- Proper slope of underground piping
- Secure connections with no leaks
- Proper sediment trap installation
- Compliance with all applicable gas line codes
Making any corrections identified ensures your gas line is safe for use.
Gas Line Maintenance
Once installed, periodically inspect your gas line:
- Conduct leak tests at least annually and after earth shifts
- Keep exterior valves clear of debris, vegetation, and corrosion
- Repaint any flaking exterior enamel coating
- Ensure grill connection remains tight
- Check sediment trap periodically
- Never run over the gas line when digging outdoors
Proper maintenance keeps the gas line safely powering patio barbecues for years.
Conclusion
Installing an underground natural gas line for an outdoor grill enables enjoying the convenience of gas cooking and grilling. With meticulous planning, high-quality materials, proper assembly, and careful installation, you can save on installation costs by safely running a gas line yourself. Ensure inspections certify your work, and perform regular maintenance to get the most out of your gas line. Soon you will be hosting backyard barbecues with perfectly grilled food!
Frequently Asked Questions
What size gas line do I need for a grill?
For a typical home grill, 3/4 inch black iron pipe or 1/2 inch polyethylene is sufficient. Ensure it provides the needed BTU capacity.
Can I use PVC for a natural gas line?
No, PVC is not approved for natural gas piping. Use black iron pipe or polyethylene gas line piping.
How deep should a gas line be buried?
Gas lines must be buried at least 18 inches underground per code in order to be protected from damage.
Can I run a gas line under a sidewalk?
Yes, gas lines can be run under sidewalks provided they meet the minimum 18 inch depth requirement.
What are signs of a gas leak in the line?
Signs include the smell of rotten eggs, dead vegetation along the line route, dirt blowing from line, or high gas bills.
How often should I test for gas line leaks?
Test at least once a year and always after earth shifts. Check for leaks near all connections with a soap solution.
Do I need a permit to run a gas line from my house to a grill?
In most areas permits are required for outdoor gas lines serving appliances like grills. Always check local regulations.
Can I bury a natural gas line myself?
In most cases homeowners can bury their own outdoor gas piping provided they follow code for materials, sizing, and depth.
How can I tell if my gas line was installed correctly?
Hire a certified inspector to check that all materials, sizing, leak checks, and depth regulations are properly followed.
What safety precautions should I take when installing a gas line?
Use approved materials only. Conduct leak checks. Bury deep enough. Follow codes. Consider installation help if needed.