Cashco 8700

The Model 8700 emergency pressure/vacuum vents provide emergency pressure and vacuum relief beyond that furnished by the normal pressure vent for atmospheric and low-pressure tanks, as well as providing a convenient access for tank cleaning, inspection and repair. Emergency relief valves provide relief from excessive internal pressure which may be caused by an abnormal condition, such as ruptured internal heating coils or an external fire. The vacuum relief allows the intake of air necessary to maintain the tank pressure within the permissible vacuum limit to avoid damage to the tank.

The emergency vent pallet provides an effective vapor-tight seal when the tank is not under emergency conditions. If the tank outbreathing requirements exceeds the capability of the normal pressure relief vent, under emergency conditions, the pallet will raise to allow vapor to escape, preventing damage to the tank due to excess pressure. The emergency vent pallet is bottom guided so that when the excess pressure is relieved the pallet will reseat to again provide a vapor-tight seal.


Body Sizes: 16″, 18″, 20″, 24″
Materials_Body: ALUM, 304 or 316 SST
Materials_Spring Chamber: N/A
End Connections: ASME 150#, API 650, DIN
Temperature Range: -400 to 400F
Inlet Pressures Range: N/A