What Fittings Are Going To Require Using Pipe Dope Or Thread Sealant Tape On Gas Lines
Published 08/25/2023
Question:
Hello, I have inherited a cabin with a propane fridge. Im confused about how to identify each of the three types of fittingss? and about which fittings need thread sealant tape: the regular ones, the flared ones, or the inverted flares. I added more tape on a fitting that was leaking slightly and the fridge stopped working - it would light when the gas was pressed but go out immediately afterwards. I suspect I used too much tape or that that fitting didnt need any. Advice appreciated!
asked by: Lesley C
Expert Reply:
Thread Sealant Tape for Gas Lines # 37207-30025 or pipe dope is only to be used on connections that use the threads to seal the lines. These are connections you typically see on steel pipe using NPT fittings. Your flared and inverted flare fittings use compression between the domed surfaces to seal off any gas from leaking. Using pipe dope or thread tape could push into the hose and restrict flow or break off and cause damage to any in line regulators or block the tip for burners. If you are experiencing any leaks on a flared fitting they should be replaced and never corrected with a sealant. Soapy water in a spray bottle will help you find leaks.
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