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。
2
In 1980, the institute and Beijing municipal electrical factory has successfully developed line frequency coreless bathroom plugstem bottom note type electric insulation casting.
年，北京市机电研究院与北京玛钢厂研制成功工频无芯塞杆底注式保温浇注电炉。
3
The top flange of an extension stem, plug shaft diameter, and distance across flats on plug shaft are the same size as the valve selected.