A pressure relief valve, also known as a safety valve, is a mechanical device installed on the roof of a silo and is designed to release or inject air. When the internal pressure reaches certain levels during filling or unloading, the safety valve activates by balancing the pressure.
This way the silo remains intact regarding the pressure changes that occur internally, as the safety valve is always ready to add or remove air in case the internal pressure goes past the predetermined limits.
A pressure relief valve is made of steel and is ideal for use on cement silo in the ready-mix concrete industry, but can also be used in any other application that includes bulk material storage.