暗杆 meaning in Chinese

nonrising stem

Z45t lowering stem vavle - changmao
Z45t型暗杆楔式闸阀- changmao
Non - rising - inside screw stems are used in bronze and iron gate valves
暗杆内螺纹结构用于青铜和铸铁闸阀。
Z45t lowering stem vavle
Z45t型暗杆楔式闸阀
Z45t lowering stem vavle
Z45t型暗杆楔式闸阀
The fig . 1710 balancing valve is a non - rising stem design incorporating a parabolic ( plug ) shaped disc
型号1710平衡阀为暗杆结构，配置抛物线(塞)形阀瓣。