The FAV Systems Model EPR Vapor-Tight Vent is designed to accommodate emergency relief flow in abnormal operating conditions, such as a fire, in which the normal operating relief vent can’t provide sufficient flow to relieve the tank.
The vent is a one piece body design, which is an extremely rugged weld body unit. Taller guide rods ensure that a full open valve position is obtainable. All vents utilize FAV Systems Counter-force Pressure Suspended Valve and stainless steel seat and internal components.
FAV Systems patented Counter-force Pressure Suspended Pallet conforms to the seat like no other valve on today’s market. The inflating effect of the diaphragm increases as the pressure in the vent rises. This means that when the vent is closer to it’s set point, the seal is at it’s greatest performance. Seat leakage for a 3/4 oz/sq” setting is less than 0.5 SCFH for all sizes at 90% of set point. All vents come standard with 316 Stainless Steel internal components, which include; guide rod assembly, bolts and nuts, seats, and Counter-force Pressure Suspended Pallet.