Pressure Ratings

Sun Jul 02, 2006 7:15 pm

hi i found some class 18 pipe its really thick but in New Zealand we use Class A-F as a pressure rating and class 4.5-18 is the old way of describing its pressure rating but i cant find out how much PSI it can go up to.

can anyone help me

singularity · Mon Jul 03, 2006 12:11 am

what are you using it for

Mon Jul 03, 2006 12:43 am

im using it for the bends after my butterfly valve as im doing an under-over design

boilingleadbath · Mon Jul 03, 2006 1:04 pm

class 18 means it's pressure rated to 18 bar.
18 bar = ~280 psi