All MetalShaping

Go Back   All MetalShaping > General Metal Shaping Discussion > Basic questions and answers
  Today's Posts Posts for Last 7 Days Posts for Last 14 Days  

Reply
 
Thread Tools Search this Thread Display Modes
  #11  
Old 02-14-2019, 11:22 PM
Don Papenburg Don Papenburg is offline
Member
 
Join Date: Dec 2018
Location: LaSalle county Illinois , USA
Posts: 99
Default

Another way to do leak free pipe is to use threadless couplings . Fit the pipes and then weld around the pipe . The fittings have a friction fit to the pipe . The fittings are steal not cast iron. They are a bit more expensive , so I started making my own out of threaded fittings . That was time consuming so I went with threaded fittings , and after treading in and lining things up I welded the fitting in place. leaks no more.
Piping with the PEX and nut & ferrel fittings work great also .
__________________
Don Papenburg
Reply With Quote
  #12  
Old 02-15-2019, 02:04 AM
metal manny metal manny is offline
Member
 
Join Date: Aug 2011
Location: Johannesburg, South Africa
Posts: 509
Default

I build pneumatic rigs for the SFX in the film industry and non-acetic cure silicone sealant in conjunction with PTFE plumbing tape. The joint is tightened firm to tight and never leaks.

No fancy snake oil formulas; no fancy prices either!
__________________
Manny

Remember that the best of men, are only men at best.
Reply With Quote
  #13  
Old 02-15-2019, 02:16 AM
lots2learn lots2learn is offline
Member
 
Join Date: Aug 2012
Location: Seattle WA
Posts: 136
Default

Quote:
Originally Posted by metal manny View Post
I build pneumatic rigs for the SFX in the film industry and non-acetic cure silicone sealant in conjunction with PTFE plumbing tape. The joint is tightened firm to tight and never leaks.

No fancy snake oil formulas; no fancy prices either!
PTFE tape first on dry threads and then silicone on top of that?
__________________
Greg
Reply With Quote
  #14  
Old 02-15-2019, 09:16 AM
David Ward David Ward is offline
Member
 
Join Date: Dec 2016
Location: TX
Posts: 41
Default

You’re right. It is yellow. I failed to mention that.
__________________
Dave
Reply With Quote
  #15  
Old 02-16-2019, 04:27 AM
metal manny metal manny is offline
Member
 
Join Date: Aug 2011
Location: Johannesburg, South Africa
Posts: 509
Default

Quote:
Originally Posted by lots2learn View Post
PTFE tape first on dry threads and then silicone on top of that?

Exactly - as simple as that!
__________________
Manny

Remember that the best of men, are only men at best.
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

All times are GMT -5. The time now is 04:48 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.