"amir" wrote in message
ups.com...
I need to know about the pumps which use to incease water pressure !
have any one had some information ?

Flow Systems and Ingersol Rand are the two most popular waterjet systems.
You're talking 3,000 psi with a 40 HP motor and supersonic velocities as the
water goes through a ruby jewel with a .015 orifice. Abrasive material is
added for cutting through anything including carbide six inches thick. 30
IPS on .250 Aluminum.

One advantage to this machine is there is no HAZ (Heat affected zone) on any
material and a surface finish close to 120 or better.