Make connections to steel gas pipe
Older houses often have threaded steel gas pipe.
If your old appliance is connected with a steel pipe and you're installing a
new appliance, buy a gas appliance connecting kit and replace the steel pipe
with the flexible stainless steel tube. But remember, you can't connect the
flare fitting on the flexible gas line directly to a steel pipe thread. You
have to install the flare fitting that's included with the kit.
Also replace old-style gas valves (photo below) with modern
ball valves that are labeled for use with gas. Before you replace an old valve,
you'll have to find and turn off the main gas valve to the house. It's usually
located near where the gas line enters the house. When you turn the gas back
on, remember to check all your gas appliances to see if they have pilot lights
that need relighting.
The photo shows how to use common plumbing parts
to join a new ball valve and a flexible stainless steel connector to steel
pipe. Coat all threaded pipe connections with pipe thread compound before
assembly. The valve shown has 1/2-in. female pipe threads on both sides. If
necessary, use a bushing to reduce the existing 3/4-in. female pipe thread to
1/2 in. Use a 90-degree elbow at the stove to avoid kinking the gas tubing when
you push the stove against the wall.
Proper Connections to Steel Pipe
Use the fittings shown for safe connections.
Old style gas valve
Old-style gas valves can leak. Replace them with approved
ball valves.
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