Water flow rate half inch PVC pipe 65 psi?
What schedule piping as schedule 40 fittings are rated for 125# thus your 140 PSI would be really dangerous to try on standard fittings
Maximum PSI rating is on the outside rating of the pipe
25 pounds per square inch = 1.72368932 bars
The recommended pressure rating for 1.5 inch schedule 40 pipe is 130 psi.
10gpm
20
250 PSI WELDED
A lot
5 Pounds per Square Inch
80 gpm
Depends on what is flowing through the pipe and the temperature of the pipe.