Fonti industriali verificate
- Scheda tecnica per valvole industriali: API 526 applies to flanged steel pressure-relief valves.
- Scheda tecnica per valvole industriali: API 520 and API 521 address pressure-relieving-device selection and pressure-relief systems respectively.
- Scheda tecnica per valvole industriali: A safety valve must be sized from set pressure, allowable overpressure, back pressure and certified relieving capacity.