A manufacturer claims their valve is ASME B16.34 compliant. The material, A351 Gr CF8M, pressure and temp rating listed in B16.34 2004, Mand Appd. VII only goes as low as -20F. B31.3 Table A-1 min temp for the material is -425 F. In paragraph 2.3.2, B16.34 it states the pressure rating at...
I am in the planning stage to replace part of an underground water system that operates at 180 psia. The drawings of the system are dated from late 1950s. The drawing indicates one of the pipes is 16" CW-175, and that it is cement-mortar lined. I measured the outside diameter of the pipe...
I have a water system with a large manifold feeding 10 3 inch pipes. Each pipe off the header has one 3" ball valve, about 1 ft of pipe and a nozzle. During normal operation we bleed water through the valves and nozzles and then close the valves. The system is pressurized to 180 psig and when...
I need to fill a bottle submerged in LH2 with 800lbm of -290F GHe in about 30 minutes. My bottle temp limit is somewhere around 130F. I have tried to model the problem with adiabatic compression and isothermal. The adiabatic heats the gas in the bottle too quickly and the isothermal of...
