The burnt down factory is being re-built, and the accumulator division is operating in another plant, and the production is not the same as before.
As for the accumulator : SBO250-3.5E1/112U-210AK, the delivery ex-works Germany is about end Feb, 2016.
For your information, the delilvery for the Diaphragm Accumulator (SBO type), the delivery is very slow, sometimes about 3 to 4 months from the date of order, more if this is a non-standard type.