Plug size to block off propane regulator

[opnspaces]

In the past I had to remove one of my propane pigtails and loan it out for the night so a camper with a bad pigtail could have some heat. My auto changeover valve properly shut off the open port and I had heat off the one remaining pigtail. But I wasn't totally comfortable with just that arrangement and have been thinking about getting a plug to block off the regulator in case something ever happens to one of my Pigtails.

So this past weekend I finally remembered and bought a plug at Home Depot. But before I open the package I wanted to make sure I bought the correct one. The plug I bought is a 1/4in MIP. Is that the correct plug to block off the pigtail hole in the regulator?

Thanks

[opnspaces]

Thanks for the replies. Based on the posts it looks like I'll have to go look for a different plug. I'm in the Home Depot parking lot almost every weekend as it's got a Costco next to it and my wife has to be there constantly.

I could consider a spare pigtail, but the plug is quite a bit cheaper and won't deteriorate if left in the trailer for years.

Anyway, thanks for the replies. 🙂

[Bobbo]

Carry a spare pigtail. If you have to loan one out, loan out the spare.

[msiminoff]

The orifices in my LPG regulator are 1/4-NPT... YMMV.

[midnightsadie]

which ever works always soap test after you,ve tightened the plug.

[Chris_Bryant]

There are 2 sizes used- 1/4" pipe and 1/4" inverted flair- the inverted flair is more common.

[Bob_Landry]

Open it up and try it. It's only a $.50 plug and you would burn way more than that in fuel to take it back.