What is a Emergency Vent?
Emergency relief valve is designed to provide emergency relief capacity beyond that furnish by the normal operating pressure relief valve on the tank.
The valve protects the tank against rupture or explosion that could result from excessive internal pressure caused by fire, etc. as excessive pressure builds up ERV opens & relieves the excess pressure.
Emergency vent is a highly developed emergency pressure relief valve with high flow capacity. It is primarily used as a safety device for emergency pressure relief for storage tanks, containers, silos, and process engineering equipment; it offers reliable protection against overpressure and prevents impermissible product vapor loss when vapor pressure inside tank is lower than the relief set pressure. It is designed to relieve particularly large amounts to prevent the vessel from rupturing in an emergency case.
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