HP thru classic rt foregrip and other questions

[vf-xx]

1/8 NPT = 1/8 MPT, if it helps. They're the same thing, and I've only seen it called NPT in paintball.

NPT = National Pipe Thread. It's a specific Thread pattern that may or may not be used in Germany. I honestly don't know. But for NPT the threads are tapered and fairly specific.

There's a fair chance that Germany uses something else. http://en.wikipedia.org/wiki/National_pipe_thread

NPT is used it quite a few other industries / places

[Ando]

Just go with a aluminum or stainless hard line. I know for a fact the aluminum lines we use at work (sizes ranging from 1/4 to 1 in) are rated at 15000 psi, stainless steel is in the upper ballpark of 30k so brass should be more then capable at withstanding a measly 4500. You'll blow a o-ring before you blow a brass fitting.

Edit: Macro line tensile str is anywhere between 1800-3500 psi depending on the wall thickness.

[Bonzai]

thanks for all the help guys!

i have consideret that i have to try it out for myself. i think i build a testsetup with a amorplate to save myself from blowing parts. after gassing up, i should try some "hitting" tests with a tiny hammer. believe me iam not gonna damage or ruin this baby...
the fittings are the parts that i didnt thrust.
should i report if it worked? can be a while...

europ uses mostly ISO metric threads. NPT is only a american standard.

so i will do what i can best: tinker in my workshop...

so long
bonzai

[athomas]

Edit: Macro line tensile str is anywhere between 1800-3500 psi depending on the wall thickness.

That's burst pressure not operating pressure. For example, Parker nylon macroline that is rated 625 psi has a burst rating of 2500psi. Many of the other cheaper macroline manufacturers use an operating pressure that is only 3x below the burst rating.

You can get teflon macroline that is much higher rated, but it is much higher priced as well.

The aluminum hardline is usually higher rated than macroline. The line and the fittings still have to have a rating. I have seen cheaper aluminum fittings blow apart at only 800 psi. It all depends on the quality and rating of the product. Don't take for granted that it will take the pressure just because it is aluminum or brass.