product center
az系列
model features
name ：zero valve
model no.：az series
model no.：az series
overview：
this valve can be used as zero valve, equalizing valve and safety valve.
feature：
the outlet pressure will remain atmospheric pressure, when the inlet pressure or flow varies.
varied types including ordinary type, high precision type and large flow type.
varied types including ordinary type, high precision type and large flow type.