How do you specify the set pressures and back pressures for a number of thermal relief valves in a cascading relief system where a long process line is blocked in many sections? What is the best type of TRV to be used? Balanced bellow or pilot-operated? What is the benefit to use pilot-operated...
CRG
Do you mean that using a balanced bellow type of thermal relief valve in a cascading relief system, you only have to specify set pressure and there is no need to specify back pressure (variable or constant)? Do you need to specify spring setting (differential set pressure)? A cacading...
