Gordon Peterson
Veteran Member
How many times have you seen an N75 valve or other vacuum device with a broken barb fitting. Instead of purchasing a $75 part how about 5 minutes and $1?
Or how can you get buy untill you get a new one ?
Always use a shop vac to pull chips and shavings away during the process...
1. Use a file to clear away the broken fitting and prepare a flat surface.
2. Tap the hole out to work with the fitting you have. Here I used a
10-32 tap for the brass fitting in the picture.
3. use a very small amount of teflon pipe dope/sealer on the threads.
(REALLY... a small amount only.)
4. Thread the fitting into the hole, tighten only lightly to prevent the
plastic from cracking. (This isn't holding the world together)
5. Plug it in and go.
I used this to repair an N75 valve that the fitting broke off of and it works great. Remember to keep shavings and crap out of the valve... Blow it out, vacuum it out... The system will not tolerate much crap.
This repair procedure should work on other parts also and different size fitting are also availiable for larger holes or tube.
You should be able to pick up the fitting at any local industrial supply location. The pic from McMastercarr is here for your reference.
Or how can you get buy untill you get a new one ?
Always use a shop vac to pull chips and shavings away during the process...
1. Use a file to clear away the broken fitting and prepare a flat surface.
2. Tap the hole out to work with the fitting you have. Here I used a
10-32 tap for the brass fitting in the picture.
3. use a very small amount of teflon pipe dope/sealer on the threads.
(REALLY... a small amount only.)
4. Thread the fitting into the hole, tighten only lightly to prevent the
plastic from cracking. (This isn't holding the world together)
5. Plug it in and go.
I used this to repair an N75 valve that the fitting broke off of and it works great. Remember to keep shavings and crap out of the valve... Blow it out, vacuum it out... The system will not tolerate much crap.
This repair procedure should work on other parts also and different size fitting are also availiable for larger holes or tube.
You should be able to pick up the fitting at any local industrial supply location. The pic from McMastercarr is here for your reference.
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