PRESSURE SAFETY RELIEF VALVES
3-5403 PRESSURE SAFETY RELIEF VALVES
API 520 Series
1″x2″ up to 10″x12″
up to ANSI 2500# (with limitations depending on DN)
CS, Cr-Mo, SS
| The new series VSU 3-5403 universal pressure | |||
| safety relief valves represents the third step in evolution | |||
| of the first series 3-5401 dated 1989. The new | |||
| series geometry is moulded by demanding experimental | |||
| tests campaign supported by CFD and FEM | |||
| analyses. Experimental tests, both on compressible | |||
| (air) and incompressible (water) fluids, with and | |||
| without back pressure, were performed according to | |||
| PED requirements (standard ISO 4126-1 and working | |||
| draft ISO 4126-11). | |||
| With respect to previous series VSU 3-5402, the | |||
| new series still provides high quality overpressure | |||
| protection with the same valve on gas, steam, vapour, | |||
| liquid and two-phase mixtures services and, in | |||
| addition, offers dramatic improvement of discharge | |||
| flow rates under back pressure conditions. | |||
►KATALOG
