3-5400
Pressure Safety
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.
