... steel 3.nominal diameter:20,25,32,40 AQF Pressure safety valve of accumulator is mainly used between hydraulic systems and the ... accumulator,for the purpose of safety,flow cut off and load relief. A safety ball valve maintain the set value of pressure ... -Lw32H -AAQF-L40H -A10025031M48×2M72×2/M60×230 AQF pressure safety valve