Compression Fittings

[firstsergeant]

Can anyone tell me a different way of tightning large, 2.5"
"-4" compression fittings, besides a very large pipe wrench?

 

[infinity]

#460 channel locks or a strap wrench. Either method stinks IMO.

 

[iwire]

Strap wrench

 

[walkerj]

Two of these
http://www.toolup.com/channel-lock/460.html?gclid=cjgj_qmjgpkcfqzlswodjdb_mw

 

[Rewire]

we use an aluminum pipe wrench it is much lighter

 

[e57]

SDS chisel tip in a hammer drill in hammer mode. Big lock nuts - no problem. Like a really big beater screwdriver.... Big compression fitting same way. If the chisel tip is say a carbide and relitively sharp (instead of worn to a nub) it will bite in, and you can drive one flat away from you - then the next and so on.... This will be the tightest you ever get one of these.... FYI it is load as hell..... Use some hearing protection.

 

[peter d]

Two of these
http://www.toolup.com/channel-lock/460.html?gclid=cjgj_qmjgpkcfqzlswodjdb_mw

You need to go another size up to the "Big AZZ" Channelock model.

Link

 

[walkerj]

Holy smoke!
I didn't know they had them that big.
They will be in the mail tomorrow

 

[chris kennedy]

Home Cheapo plumbing isle, water filter wrench. Less than $10.

 

[iwire]

SDS chisel tip in a hammer drill in hammer mode. Big lock nuts - no problem

I have used my bulldog with just a normal 1/4" bit on hammer mode only to tighten lock nuts. As you said, they will never be tighter, you have to be careful not to cut through the box.

Never tried it on compression fittings, I will keep it in mind.

 

[e57]

I have used my bulldog with just a normal 1/4" bit on hammer mode only to tighten lock nuts. As you said, they will never be tighter, you have to be careful not to cut through the box.

Never tried it on compression fittings, I will keep it in mind.

I picked this up from Electure over on ECN several years ago - I scoffed at the idea until I tried it.

As for strap wrenches - the rubber ones stretch too much before you get it near tight - the nylon rubber coated - like the one Iwire posted work much better.