Internal tank safety valves

What is an internal tank safety valves?

In-tank safety valves allow control of the medium outflow from the storage tank. Such valves are used as flank valves in cryogenic medium tanks. The operation is based on the plug-shaped shutoff mechanism in the valve, which is located inside the tank. The plug’s sealing surface is passed through and secured with an O-ring to achieve excellent tightness. In normal operation, the valve is in the open position, allowing the medium to flow out of the tank. The flow is then controlled by a gliding valve installed in the pipeline. In the event of faults or during repair work on the gliding valve, the plug valve located inside the tank is closed.

Selection of an internal tank safety valves

The PROTEGO SI/FI valve closes from inside the tank, so leakage will not occur if the shutoff mechanisms located outside the tank were to be damaged. The valves can also be serviced, as only the mounting flange is welded to the tank. The external parts of the valve can be replaced without emptying the tank.

We assist in the selection and sizing of a safety valve that meets the requirements of the application.