Spring-Loaded Pressure Relief Valves VCP

VCP Pressure Relief Valves are the last resort when abnormal pressure conditions endanger the silo structure. This is why sudden excess or suction pressure inside the silo must be dealt with instantaneously. Even though ideally a Pressure Relief Valve should never have to go into action, it must be efficient and reliable if needed.
With hundreds of thousands installed worldwide, VCP Pressure Relief Valves have given evidence of being totally reliable under most different conditions.
For applications in the food industry a version compliant with European Regulation (EC) No. 1935/2004 is available.

Technical Features


VCP Pressure Relief Valves consist of a cylindrical casing with a bottom flange to be connected with a spigot welded on the silo roof, a disc shape inner steel lid for negative pressure operation held in position by a central spring rod, an outside steel ring for excess pressure kept in position by three spring rods, gaskets, and a weather protection cover.

  • Two sizes available
  • Flow rate: up to 13,000 m3/h (7,650 cfm)
  • Painted carbon steel or 304 stainless steel casing
  • Stainless steel weather protection cover
  • Mechanical set-up for inductive signalling sensor
  • Preset for maximum negative pressure of -0.005 bar (-0.07 psi) and maximum excess pressure of 0.05 bar (0.72 psi)
  • ATEX-certified version
  • Compliance with European Regulation (EC) No. 1935/2004
  • Optionally different settings available
  • Inspection hatch
  • Inductive sensors
  • Bird net

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