check-valve ball spring 止回阀球弹簧
check-valve ball seat 止回阀球座
ball check valve 落球式止回阀 ; [机] 球形止回阀 ; 止回球阀 ; [机] 球形单向阀
check valve ball [机] 止回阀球
spring ball check valve 弹簧球式止回阀 ; 弹簧球式
check valve ball seat 止回阀球座
check valve ball spring 止回阀球弹簧
dual ball check valve 双球止逆阀
Gravity ball check valves are converted to vent valves by replacing the standard ball with a floater ball and inverting the valve at installation-with seat up.
重力球形止回阀可以变为通风阀，只需用漂浮球体更换标准球体，然后在安装时将阀门倒置，使其阀座向上即可。
In addition, it should be considered for cutlery, needle valves, ball check valves, valve seats, pump parts, ball studs, bushings, and wear-resistant textile components.
首选应用是轴承结构，包括滚珠和轴套。还有，它也能用来做刀具、针形阀、球型止回阀、阀门基座、泵零件、球头螺栓、轴套、抗磨损纺织机械。
At present, we develop and produce the main products including butterfly valve, ball valve, check valve, gate valve and so on.
目前，开发生产的主要产品有蝶阀、球阀、止回阀、闸阀等。
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