This is the gas valve from the exploded furnace.

How about the gas intake valve?

The methane gas valve just broke. The whole place is gonna go up.

Defective gas valve filled the cellar with gas, ignited when Linda turned on the heat.

- That's a gas valve. - It looks like we found Cal's evidence.

So the gas valve wasn't the cause of the fire, like Cal originally claimed.

Oh, you ever need a multi-directional mike with optional tear-gas dispenser valve?

I noticed that the gas shut-off valve on the fireplace was dented.

Jean, I need you to get to the gas shut-off valve and turn it off while we seal these vents.