H76 type lug and wafer type double discs swing check valve(ANSI standard)H71对夹升降式止回阀(国标)H71 wafer type lift check valve(GB standard)
公称压力
PN(MPa)
Norminal
pressure公称通径
DN(mm)
Norminal
diameter尺寸(mm)Dimension重量(kg)
Weight配管法兰(供参考)
Flange(as referenced)LDD3D2螺栓孔中
心圆直径D1
Diameter of the bolt螺栓数量
Quantity of
the bolt螺栓直径d
Diameter
of the bolt螺栓长度