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Machine Shop and Tool Talk

How to Tighten Pipe


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  #1  
Old 06-24-2017, 11:18:46 PM
ronny p 148 ronny p 148 is offline
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Default How to Tighten Pipe

I had some 1/4 inch stainless tried to use strap wrench would not grip the pipe Finally use small pipe wrench . If I wanted to tighten pipe brass etc. and not leave wrench marks for polished or any other undamaged look how do you accomplish this task and have it not leak due to not enough torque ?

Ronny
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Old 06-24-2017, 11:22:12 PM
dalmatiangirl61 dalmatiangirl61 is offline
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Default Re: How to tighten pipe

Use an internal wrench, I've got a few around here, somewhere, have never needed them, yet.
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Old 06-24-2017, 11:33:21 PM
slip knot slip knot is offline
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Default Re: How to tighten pipe

I'm surprised the pipe wrench got ahold of the 1/4 SS pipe. I've always struggled with the smaller SS piping.
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Old 06-24-2017, 11:43:24 PM
Power Power is offline
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Default Re: How to tighten pipe

I have a strip of bicycle inner tube for that. I wrap cleaned grease & oil free pipe with it, then strap wrench.
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Old 06-25-2017, 12:37:16 AM
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Troll Troll is offline
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Default Re: How to Tighten Pipe

I've seen rubber lined clamp wrenches used for this at both Grumman, and McDonnel-Douglass. The wrenches were specific to the sizes of tubing however and probably not cheap. They worked sorta like a take apart piston ring compressor with an over center cam action to close and apply tension to the tubing.
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Old 06-25-2017, 06:48:02 AM
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Doug Kimball Doug Kimball is offline
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Default Re: How to Tighten Pipe

Use a Parmalee pipe wrench .... No.1 set 1/4" to 1" & No. 2 set 1" to 2". I bought mine at a yard sale several years ago. Recently bought #1 & #2 for a friend for $30 at a flea market. New they are prohibitively expensive; used on Ebay are also pricey.
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Old 06-25-2017, 06:52:48 AM
Glenn Gieszler Glenn Gieszler is offline
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Default Re: How to Tighten Pipe

Chain wrenches do work, however having a selection of sizes that best fits the application is a requirement

You can google vice grips, the picture shown is a secret tool used to prevent the marring of shafts along with a strap wrench when repairing rotary burners that I use, there are several sizes available
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Old 06-25-2017, 08:53:43 AM
ronm ronm is offline
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Default Re: How to Tighten Pipe

Those vise grips were intended for rounded-off hex nut removal, they grip 3 sides of a hex. I have a set of them too, & they work, other than they're too thick to get into a lot of places where you need them...but yeah, they do work for gripping round things too...
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Old 06-25-2017, 01:05:46 PM
ronny p 148 ronny p 148 is offline
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Default Re: How to Tighten Pipe

SLIP KNOT Ya it worked but left marks was not issue was just drain for my compressor . Why don't they put decent 1/4 turn valve on them so you don't have to lay on floor to reach it ! Plus cheap screw valve was painted shut wouldn't have worked anyway . Just wanted to know how you all do it for future projects that I want to jaw marks on.

Ronny
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