PSI???

[glassdoctor]

Yeah, as long as the inner seal is functioning, the sloppy threads of the screw bolt don't matter.... they could use fine machine threads, but it would take a while to turn that by hand... maybe I could use my 18v dewalt to adjust the injector

[glassdoctor]

Of course the is two different kinds of pressure... it can get confusing to read which is which in the posts...

psi pressure... pneumatic/hydraulic
seal pressure... downforce of the injector/seal on the glass

psi will affect the seal pressure to some degree depending on the design of the seal. You can't very well run 100 psi with the seal just barely held against the glass. The type and condition of the seal has much to do with that.. I know I'm guilty of using a seal that's getting a bit of wear and tear and using a bit more downforce than normal to maintain a good seal.

[desertstars]

Thanks, guys.

My question pertains to the simple Novus stem, cylinder, tip injector assembly rather than the more complicated Glas-Weld O ring types.

And is further restricted to s/s as far as material construction.

I CAN tell you this from a few years of experience.

I have never worked with any manual system that provides more suction and pressure than Glas-Weld's tripod.

It provides enough suction to jerk a golf ball driven by John Daly back through a two inch garden hose and return it to the tee.

(Is that analogy acceptable, Jeff, or will you delete this post because all of us really know what I'm talking about when it comes to golf balls and garden hoses?)

Anyway, I won't mention the disadvantages of the GW equipment within this forum. That company is dedicated to our repair industry as much or more than any other and were in the forefront of the network system years ago.

How the hell we lost control to Lynx and Safelite is beyond me.

Must have something to do with lack of PSI.

[gold star wsr]

Know what? You do enough repairs, you get a feel for when the pressure is right, and you dont even think about PSI's. And because all windshield glass is not the same, it is difficult to depend on a standard PSI anyway. I use the GT VP-2000, which has a 'pressure guage', but I use the numbers merely as a guide, because no two repairs are alike on account of outside influences (temperature in particular) and the difference in glass, and the location of the break, etc. The only pressure concern should be applying too much, and you will know when that happens ... either your seals will blow out, or the break will run. If you want to know the limits of your equipment, try it on your practice glass. Be sure to wear safety glasses, though, because when the seals blow, that resin comes sprayiing out at whatever PSI you have reached at the time of release and you sure dont want to get even a drop of it in your eyes or mouth.

[mafsu]

just my two cents about a generic supplier on the three piece injector. Most of them seem to be the same, meaning the injector tips are basically identical. Esprit uses this type of injector and they are better than any of the other plastic injectors I have used. Their tips do not fit other injectors as they are deeper. This allows then to place 4 ribs inside instead of the usual two. The added ribs and depth of the tips allow for much more vaccuum and pressure than the generis two rib tips.

[glassdoctor]

Someone mentioned rib tips.. is it dinner time? mmm... =P~