What tool to hold on to these brass fittings?

[LilyT]

I'd like to unscrew the two fittings apart:
the left one is a 1" barb x 3/4" male MPT - the surface got marred by my tongue & groove plier.
the right one is a 3/4" female FPT x 3/4" female FPT - this one has 2 ridges.

Are there some special tools to hold on to these fittings?

 

[LilyT]

I probably found the answer to my own question - pipe wrench!

 

[Hamberg]

I probably found the answer to my own question - pipe wrench!

And or (in conjunction with) vice grips...

 

[LilyT]

And or (in conjunction with) vice grips...

Thank you very much for the suggestion!
It’s funny, I do have a 9” long nose vice grip lying around in my toolbox, however, I have never figured out how to use it. Now after seeing your suggestion, I searched for and finally learned its proper usage.

 

[Hamberg]

version below (round jaw) works best but, pretty much, any locking version will work...

 

[Twowaxhack]

I vote pipe wrenches

 

[CT18]

Knipex

 

[LilyT]

Knipex

Thanks for your suggestion! The tongue and groove plier I used looks like knipex. It slipped though. Maybe it’s because the jaw of my plier is not round enough like Hamberg suggested.

 

[Twowaxhack]

Knipex is a name brand of tools ......

They make everything from screwdrivers to bolt cutters They make pipe pliers and all kinds of high dollar toolZ.

You can go to Walmart and buy two cheap pipe wrenches and be set for life LilyT

 

[LilyT]

Knipex is a name brand of tools ......

They make everything from screwdrivers to bolt cutters They make pipe pliers and all kinds of high dollar toolZ.

You can go to Walmart and buy two cheap pipe wrenches and be set for life LilyT

I see. I was looking at Harbor Freight for cheap tools, I didn't know Walmart carries them too. Thanks!

 

[Twowaxhack]

I see. I was looking at Harbor Freight for cheap tools, I didn't know Walmart carries them too. Thanks!

Harbor freight is fine too.

I have a $20 Harbor Freight torque wrench thats just as accurate as my $250 Snap-on torque wrench.

 

[Just Dave]

To be fair even with good tools sometimes a little heat works wonders at assisting loosening parts.

 

[pasadena_commut]

Word of warning about Harbor Freight vice grips. My son has a pair that came with an extensive tool set which was made with such soft metal that when it was used to apply a lot of torque to a pipe it deformed. Now the lower jaw is displaced back half an inch from the upper one. That set was pretty flimsy actually, a couple of the sockets also deformed. The 3/8" to 1/4" socket adapter also sheared off, but I've done that too with a Craftsman adapter too - that little 1/4" post cannot take much torque.

On the other hand, HF plumber's wrenches are quite sturdy.