Manhole is installed on the top of the tank, built Pressure&Vacuum Vent and Emergency Vent.
· Pressure&vacuum vent,When inside pressure higher 6~8KPa or under 2~3KPa than the outside,will be open to balance the different pressure;when the different pressure less than -2~6KPa,the P/V vent will be closed to keep the product not voiatilized
· Automatic sealing of P/Y vent in a roll over situation prevents dangerous and costly spillage
· when the inside pressure is higher 21~32KPa than the outside,emergency vent will be open automatic to keep tank safe.The vent capacity is 7000m3/h
· Two-stage opening allows safe release of residual compartment pressure before fully opening the fill cap.
· Easy maintenance,convenience,safety
· Working pressure: 0.6MPa