Pressure release arrangements, in particular for product processing system

A valve for enabling release of pressurized steam from a pressure vessel, the valve comprising a displaceable closure member which, in its closed disposition, is maintained in said closed disposition by exposure to the pressure of the steam within the pressure vessel, and the closure member being displaceable from said closed disposition to an open disposition against the pressure of the steam within the pressure vessel for said release of pressurized steam from the pressure vessel.

A product treatment system comprising a valve for enabling release of pressurized steam from a pressure vessel, the valve comprising a displaceable closure member which, in its closed disposition, is maintained in said closed disposition by exposure to the pressure of the steam within the pressure vessel, and the closure member being displaceable from said closed disposition to an open disposition against the pressure of the steam within the pressure vessel for said release of pressurized steam from the pressure vessel, wherein the valve is mounted for release of pressurized steam into an expansion region substantially at the point of entry of steam into said expansion region.

A product treatment system comprising a pressure vessel, an expansion region for receiving pressurised steam discharged from the pressure vessel at the end of a steam treatment phase of said product treatment, and a solids trap, said solids trap being in communication with the expansion region to receive steam at a substantially reduced pressure as compared with the steam pressure on initial entry into the expansion region, along with any entrained solid matter.

A product treatment system comprising a pressure vessel, an expansion region for receiving pressurised steam discharged from the pressure vessel at the end of a steam treatment phase of said product treatment, and a solids trap, said solids trap being in communication with the expansion region to receive steam at a substantially reduced pressure as compared with the steam pressure on initial entry into the expansion region, along with any entrained solid matter, the system further comprising a valve for enabling release of pressurised steam from a pressure vessel into said expansion region, the valve comprising a displaceable closure member which, in its closed disposition, is maintained in said closed disposition by exposure to the pressure of the steam within the pressure vessel, and the closure member being displaceable from said closed disposition to an open disposition against the pressure of the steam within the pressure vessel for said release of pressurized steam from the pressure vessel.

A valve for enabling release of pressurized steam from a pressure vessel, the valve comprising a displaceable closure member which, in its closed disposition, is maintained in said closed disposition by exposure to the pressure of the steam within the pressure vessel, and the closure member being displaceable from said closed disposition to an open disposition against the pressure of the steam within the pressure vessel for said release of pressurized steam from the pressure vessel, wherein the nominal flange size of the valve body at the steam exit side is substantially greater than the nominal flange size of the valve body at the steam entry side.