安装一根粗弹簧就可以达到迅速关闭阀门的目的。
Rapid closing of the valve is accomplished fitting a heavy spring.
此类阀门利用气压和弹簧压力操作。
These valves use air pressure and spring pressure to operate.
弹簧能够使阀门保持在正常流量位置。
这种阀门应该是黄铜阀体，不锈钢阀杆和弹簧。
Valve shall have a brass body and stainless steel stem and spring.
有些类型止回阀配置弹簧驱动，能够在流动停止时，立即关闭阀门。
Some styles are spring-actuated for immediate closure when flow stops.
有些类型止回阀配置弹簧驱动，能够在流动停止时，立即关闭阀门。
Some styles are spring-actuated for immediate closure when flow stops.
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