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I recently bought a house that has a 120lbs propane tank. The propane is used for the hot tub water heater, and has a line plumbed to the outdoor patio where the prior owner had a fire pit.
I have a propane fire pit I’d like to connect. The fire pit was configured for a typical 20lbs propane tank with regulator hose, connected by QD fitting to a flexible hose with 1/4” fitting (see picture in link). My ground propane line terminates with a 5/8” shutoff valve.
2 questions:
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is there anything I need to check with regulator pressures etc. to hook up the fire pit to the tank at my house? The prior owner had a small fire pit hooked to the same connection so I figure I’m most likely ok here.
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assume I can just use a 5/8 to 1/4 brass reducer to connect the fire pit supply hose to the in ground line?
https://imgur.com/a/SPZhXsm
I did more research on this topic and decided to go with CSST (corrugated stainless steel tubing) inside a PVC conduit. All material is available at Home Depot. Good references are propane101.com and homeflex.com BTW, I don't have a natural gas line in my home.
Copper, steel and polyethylene are typically used for propane & natural gas - check your local code. I'd probably go with black iron pipe - it's cheap, tough, readily available, and relatively easy to work with. Dope the connections with pipe dope approved for gas, and pressure test the assembly before putting it into service. It should be buried at least 12" deep.
Note that the CSST (Corrugated Stainless Steel Tube) flexible gas line typically requires a conduit for direct burial.