Pressure Release Valve are used the discharge the high pressure in the cement silo. Those valves start to run when the pressure value reaches the pre-set pressure limit value.
Those valves are the equipments that keeps the pressure in the cement silo in desired values and prevent the cement silo filter from breaking down.
The cement is transferred from silobus to cement silo with high pressure. In case there is no cement in the silobus, only the air is transferred into the cement silo and thus there occures high pressure in the cement silo. At this moment if Pressure Release Valve do not start to run , the cement silo and the cement silo filter can be damaged seriously.