how to shut off this type gas valve in furnace?


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Old 08-04-17, 08:20 PM
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how to shut off this type gas valve in furnace?

I am going to check out broken furnace blower. But I got stuck when tried to shut off gas valve on the pipe to furnace. It is so tight I stopped and don't want to break pipe.

Do i need bigger wrench for this work? thanks for tips.Name:  20170804_212745.jpg
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Old 08-04-17, 08:38 PM
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Loosen the nut on the bottom of the valve about a 1/4 to 1/2 turn and then rap it smartly upward with a hammer. This will lift the tapered plug and you will be able to turn the valve off. It WILL most likely leak while the nut is loose so tighten it up after you close the valve. Do the same procedure to open the valve after completing your work.

It would be best to replace that valve in the near future with a new AGA (American Gas Association) listed gas valve.
 

Last edited by Furd; 08-04-17 at 08:59 PM. Reason: Correct misspelled word.
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Old 08-04-17, 08:40 PM
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Adjustable wrench (AKA Crescent wrench), at least 12". Or a monkey wrench. Or a pipe wrench. (No a monkey wrench isn't the same as a pipe wrench The smooth jaws of the monkey wrench are less likely to damage the valve.)
 
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Old 08-04-17, 08:55 PM
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Just FYI..... the line on the valve tells you if the gas is on or off. It's just a quarter turn.

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Old 08-04-17, 09:26 PM
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would try this tomorrw "Loosen the nut on the bottom of the valve about a 1/4 to 1/2 turn and then rap it smartly upward with a hammer. "
 
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Old 08-04-17, 10:21 PM
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Correct. In the picture I illustrated the shape of the part that turns. It's tapered so when the nut gets tightened it pulls the taper deeper into the valve body. When you tap it slightly.... you're pushing the tapered part out of the valve body.

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Old 08-05-17, 07:14 AM
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It works! Turned 1/4 on the nut then i tried wrench again on valve, it turned this time.
Thx Furd for the idea and PJmax for the correct on/off valve position picture. Also thx Ray2047 for the special wrench idaea.
 
 

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