Z543WF、Z543WDF、Z543WbF、Z543WbD、Z543WbYZ544WF、Z544WDF、Z544WbF、Z544WbD、Z544WbY 抗硫阀门型号前加“K”、调节型阀门型号前加“L”、耐磨型F后加“M”规格:4"~36" in、DN100~900mm 压力:150~900Lb、PN1.0~16MPa连接尺寸