所述阀可以具有一对推动阀关闭的辅助弹簧。
The valve may have a pair of helper springs urging the valve closed.
增大线圈电流将加大电磁的力，因此推动阀芯压缩弹簧产生一个更大的位移。
Increasing the coil current will increase the solenoid force and hence move the spool a greater amount against the spring.
在此比例电磁铁被用来推动一个锥阀芯通过一个弹簧压缩阀座。
In this case a proportional solenoid is used to push a poppet against a seat via a spring.
当手轮象开启位置旋转时，上阀杆离开横膈膜，弹簧推动下阀杆离开阀座。
When the handwheel is rotated toward the open position the upper stem is moved away from the diaphragms allowing the spring to push the lower stem away from the seat.
阀芯的轴向运动则由两端阀腔的静压力推动。
While the linear motion is actuated by pressure difference of two end spool chamber.
断电时，辅阀利用弹簧力或介质压力推动关闭件，向下移动便阀门关闭。
The high pressure around the valve off, fluid pressure to promote the closure of parts moving down, close the valve.
当线圈断电时，先导阀芯靠弹簧复位，先导孔打开，阀上腔卸压，活塞靠下腔介质压力推动，电磁阀打开。
When the coil power, the pilot valve by the spring return, pilot hole open, pressure relief valve on the chamber, the piston on the lower chamber medium pressure to promote the solenoid valve open.
当线圈断电时，先导阀芯靠弹簧复位，先导孔打开，阀上腔卸压，活塞靠下腔介质压力推动，电磁阀打开。
When the coil power, the pilot valve by the spring return, pilot hole open, pressure relief valve on the chamber, medium pressure piston push the lower chamber, the electromagnetic valve is opened.
当手轮象开启位置旋转时，上阀杆离开横膈膜，弹簧推动下阀杆离开阀座。
The lower stem is encased in a spring which forces the stem away from the seat when the valve is opened.
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.
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.
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