弹簧平衡型、气动膜片或活塞，执行机构对于开关阀是首选的。
Spring opposed , air operated diaphragm or piston, actuators are preferred for on-off applications.
采用新型VTDRY多弹簧执行机构，具有高度低、重量轻、安装维修简便等优点。
The model VTDRY multi spring actuator, has the advantages of low height, light weight, convenient installation advantages repair.
阀门泄漏量符合ANSIB16.104标准，调节阀配用不同的多弹簧执行机构，输出力大。
Valve leakage and conforms to the ANSIB16.104 standard, valve equipped with multi spring actuator different, large output force.
空气或燃气缸体执行机构包括单动或双动，由机械弹簧或气动力实现故障开启或关闭等各种类型。
Air or gas cylinder actuators include single or double acting, fail open or closed by mechanical spring or pneumatic force. They can be manufactured to accommodate any length stroke.
弹簧执行机构止回阀用于管道排放。外置操作手柄和弹簧执行机构的旋启式止回阀用于污水坑、排污和雨水排泄管道。
Spring-actuated valve to be used on pump discharge. Swing check with outside lever and spring to be used on sump, sewage and storm drain lines.
该汽轮机EH执行机构的弹簧座体积比较大，检修时弹簧座装拆困难，影响了装配和维修的效率。
The size of the spring box of this steam turbine's EH actuator is relatively so big that it is difficult to assemble and disassemble and it affects the efficiency of assembly and maintenance.
空气缸体执行机构的局限性在于机械弹簧的局限性和要求推力不超过75,000磅。
The limitations of air cylinder actuators are mechanical spring limits and thrust requirements in excess of 75,000 Ibs.
空气缸体执行机构所采用的机械弹簧可以达到20,000磅的推力，及最大14英寸的冲程限制，主要取决于所需要的输出推力。
Mechanical springs used with air cylinders can be sized for up to 20,000 Ibs. of thrust and have a stroke limit of about 14 "max. depending on thrust output required."
春季返回气动执行机构使用的空气供应，以推动一个方向阀杆和一个内部装载弹簧返回到原来的位置阀门。
The spring return pneumatic actuators use an air supply to drive the valve stem in one direction and an internally loaded spring to return to the valve to its original position.
弹簧执行机构止回阀用于管道排放。
QZMAT气动薄膜隔膜调节阀\QZMBT气动薄膜隔膜调节阀由多弹簧气动薄膜执行机构和隔膜阀组成。
QZMAT pneumatic diaphragm valve film \ QZMBT diaphragm valve pneumatic membrane pneumatic membrane by the multi-spring diaphragm actuators and components.
QZMAT气动薄膜隔膜调节阀\QZMBT气动薄膜隔膜调节阀由多弹簧气动薄膜执行机构和隔膜阀组成。
QZMAT pneumatic diaphragm valve film \ QZMBT diaphragm valve pneumatic membrane pneumatic membrane by the multi-spring diaphragm actuators and components.
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