An internal safety valve is a shut-off valve for tanks. Under normal operating conditions, the internal safety valve is operated in open position and is only shut in case of an emergency.
The Pressure/vacuum relief valve Pressure/vacuum relief valve is an umbrella term that includes pressure or vacuum relief valve as well as pressure and vacuum relief valve. valve is installed on the inside of the tank and prevents drainage in case of destruction or leakage of aggegate components. A distinction is made between hand-operated internal safety valves Internal safety valve An internal safety valve is a shut-off valve for tanks. and special designs with direct or remote control.
