H72系列对夹式止回阀主要尺寸及重量公称压力（MPa）1.0  1.62.54.0公称通经DN(mm)尺寸(mm)重量(kg)尺寸(mm)重量(kg)尺寸(mm)重量(kg)LDLDLD1535521.035521.035521.02038621.538621.538621.52544722.144722.144722.13250833.050833.050833.04057934.057934.057934.050631085.0631085.0631085.065681286.0681286.0681286.080721427.1721427.1721427.1100841629.2841689.2841681012511519212.511519412.51151914.0150136218221362242213622423.5200171273351712843717129139