Function
The accumulator shut-off block serves for the protection, isolation and unloading of hydraulic accumulators. It is classified based on its use according to the Pressure Equipment Directive 2014/68/EU article 4, section 3.
The connection between the accumulator shut-off block and the accumulator is realized by means of an accumulator adapter. An optional, additional, electrically operated 2-way valve (normally open) enables automatic unloading of the accumulator in case of shutdown or “emergency off function”. The accumulator is protected from inadmissible overpressure by means of the pressure relief valve.
The pressure relief valve must not be used for any control tasks. Sufficient difference between the pressure set at the pressure relief valve and the operating pressure must be ensured. Response of the pressure relief valve should be prevented.