加重型阀门及管件
extra heavy valves and fittings
智能型阀门定位器
smart valve positioner
intelligent valve positioner
(5) Y型阀
Y-valve (Y-body globe valve
A级管道阀门
the A-level pipeline valve
Fisher智能阀门定位器
fisher intelligent valve positioner
VDMA德国制造商协会阀门分会
VDMA - German Valve Manufacturers Association
Y型阀截止阀
Y-valveY-body globe valve