1·Control type: normally closed, normally open, double acting.
控制形式：标准常闭、常开、双作用。
2·Limit switch, directly actuated, spring returned, normally open.
直接启动、弹簧复位、正常闭合的限制开关。
3·These valves can be normally closed, normally open or universal.
这些阀门可以常闭，常开或普遍。
4·Usually divided into normally open, normally closed and self-holding three.
通常分为常开型，常闭型和自保持式三种。
5·All of these are normally closed valves, except for reducing valves, which are normally open.
所有这些都是正常关闭阀，除减少阀门，一般开。
6·Any combination of normally closed, normally open or universal valves may be grouped together.
任何结合在一起的常闭，常开或通用阀门可归纳。
7·Limit switch, directly actuated, spring returned, normally open. Right-click for open or held closed.
限制开关， 直接启动， 弹簧复位， 正常情况下为断路。右击断开或保持闭合。
8·Options include direct acting and diaphragm type operations in a Normally Open or Normally Closed version.
可选包括直接作用和隔膜式常开或常闭版本。
9·Limit switch, directly actuated, spring returned, normally open. Switch can be specified as open or closed.
限制开关，直接启动，弹簧复位，正常情况下为断路。可指定开关为断开或接通。
10·Valve types include Normally Open and Normally Closed valves, for use in fuel, hydraulic, or pneumatic applications.
阀门有常开和常闭两种，可用于燃油，液压或气动应用领域。