产品概述：FPA燃气管道阻火器采用两个管道阻火器叠加组合而成，具有双重阻火功能，适用于安装在输送可燃性气体如回热炉燃料气、***、石油液化气、煤矿***排放的管网，也适用于民用煤气管道，防止在正常情况下火焰向管道中逆向传播，以避免灾难***故的发生。安全阻火速度1425m/s,极限阻火速度1605m/s。该阻火器是利用金属波纹板之间狭缝间隙对管道中传播的亚音速或超音速火焰具有淬熄作用的原理设计制造的。外形连接尺寸：型号公称通径DND1D2LPN1.0MPaPN1.6MPaPN2.5MPaPN4.0MPaFPA-151518×357×3.5330330330330FPA-202025×357×3.5330330340340FPA-252532×3.573×4365365375375FPA-323238×3.573×4375375390390FPA-404045×3.589×4375390405410FPA-505057×3.5108×44204254454650FPA-656573×4133×4.5485485515520FPA-808089×4159×4.5505520560560FPA-100100108×4219×8555560600645FPA-125125133×4.5278×8615620670720FPA-150150159×4.5325×8665665735800FPA-200200219×8377×994095010151100FPA-250250278×8480×101030107011501265FPA-300300325×8529×101295129514301545FPA-350350377×9630×121350135014301545)