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。
The invention relates to a knife-shaped gate valve, in particular to a rising stem knife-shaped gate valve.
本发明涉及一种刀型闸阀，尤其涉及一种明杆刀型闸阀。
The invention relates to a knife-shaped gate valve, in particular to a rising stem knife-shaped gate valve.
本发明涉及一种刀型闸阀，尤其涉及一种明杆刀型闸阀。
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