防护型可调范围回差防爆型型号MpaKpa型号9NN-K4-N4-F1A0.689-3.4436.549L-K4-N4-F1A9NN-K5-N4-F1A1.379-6.8963.439L-K5-N4-F1A9NN-K45-N4-F1A1.379-12.06103.39L-K45-N4-F1A(6,5)工作压力：10.3Mpa保护压力：17.2Mpa917.2Mpa41.2Mpa54NN-K117-M4-B1A51-0-511.6954L-K117-M4-B1A54NN-K118-M4-B1A102-01.6954L-K118-M4-B1A)